Home / 20,491,788.24-28,275,935.22-13,159,553.22

Finding the Fourth Proportional to 20,491,788.24, 28,275,935.22 and 13,159,553.22

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Solution

The fourth proportional to 20,491,788.24, 28,275,935.22 and 13,159,553.22 is: 18,158,428.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,491,788.24 : 28,275,935.22 = 13,159,553.22 : x
  2. Step 2: Convert to fraction form
    20,491,788.24/28,275,935.22 = 13,159,553.22/x
  3. Step 3: Cross multiply
    20,491,788.24x = 28,275,935.22 × 13,159,553.22
  4. Step 4: Simplify right side
    20,491,788.24x = 372,098,674,372,862.44
  5. Step 5: Solve for x
    x = 372,098,674,372,862.44/20,491,788.24
  6. Step 6: Final answer
    x = 18,158,428.64

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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.