Home / 21,625,921.87-29,840,561.78-13,134,642.92

Finding the Fourth Proportional to 21,625,921.87, 29,840,561.78 and 13,134,642.92

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Solution

The fourth proportional to 21,625,921.87, 29,840,561.78 and 13,134,642.92 is: 18,123,857.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,625,921.87 : 29,840,561.78 = 13,134,642.92 : x
  2. Step 2: Convert to fraction form
    21,625,921.87/29,840,561.78 = 13,134,642.92/x
  3. Step 3: Cross multiply
    21,625,921.87x = 29,840,561.78 × 13,134,642.92
  4. Step 4: Simplify right side
    21,625,921.87x = 391,945,123,589,182.19
  5. Step 5: Solve for x
    x = 391,945,123,589,182.19/21,625,921.87
  6. Step 6: Final answer
    x = 18,123,857.38

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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.