Home / 13,238,117,668.76-18,268,451,410.12-7,216,490,232.96

Finding the Fourth Proportional to 13,238,117,668.76, 18,268,451,410.12 and 7,216,490,232.96

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Solution

The fourth proportional to 13,238,117,668.76, 18,268,451,410.12 and 7,216,490,232.96 is: 9,958,674,221.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238,117,668.76 : 18,268,451,410.12 = 7,216,490,232.96 : x
  2. Step 2: Convert to fraction form
    13,238,117,668.76/18,268,451,410.12 = 7,216,490,232.96/x
  3. Step 3: Cross multiply
    13,238,117,668.76x = 18,268,451,410.12 × 7,216,490,232.96
  4. Step 4: Simplify right side
    13,238,117,668.76x = 131,834,101,172,393,033,728
  5. Step 5: Solve for x
    x = 131,834,101,172,393,033,728/13,238,117,668.76
  6. Step 6: Final answer
    x = 9,958,674,221.75

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Double scale
Find fourth proportional to 13,238,117,669.76, 18,268,451,411.50 and 7,216,490,233.96
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.