Home / 21,242.76-29,314.64-11,811.12

Finding the Fourth Proportional to 21,242.76, 29,314.64 and 11,811.12

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Solution

The fourth proportional to 21,242.76, 29,314.64 and 11,811.12 is: 16,299.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.76 : 29,314.64 = 11,811.12 : x
  2. Step 2: Convert to fraction form
    21,242.76/29,314.64 = 11,811.12/x
  3. Step 3: Cross multiply
    21,242.76x = 29,314.64 × 11,811.12
  4. Step 4: Simplify right side
    21,242.76x = 346,238,730.80
  5. Step 5: Solve for x
    x = 346,238,730.80/21,242.76
  6. Step 6: Final answer
    x = 16,299.14

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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.