Home / 20,861,879,236.74-28,796,881,837.50-12,403,682,835.86

Finding the Fourth Proportional to 20,861,879,236.74, 28,796,881,837.50 and 12,403,682,835.86

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Solution

The fourth proportional to 20,861,879,236.74, 28,796,881,837.50 and 12,403,682,835.86 is: 17,121,534,686.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,861,879,236.74 : 28,796,881,837.50 = 12,403,682,835.86 : x
  2. Step 2: Convert to fraction form
    20,861,879,236.74/28,796,881,837.50 = 12,403,682,835.86/x
  3. Step 3: Cross multiply
    20,861,879,236.74x = 28,796,881,837.50 × 12,403,682,835.86
  4. Step 4: Simplify right side
    20,861,879,236.74x = 357,187,388,974,144,880,640
  5. Step 5: Solve for x
    x = 357,187,388,974,144,880,640/20,861,879,236.74
  6. Step 6: Final answer
    x = 17,121,534,686.34

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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.