Home / 21,428,573.91-29,571,821.55-12,138,072.92

Finding the Fourth Proportional to 21,428,573.91, 29,571,821.55 and 12,138,072.92

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Solution

The fourth proportional to 21,428,573.91, 29,571,821.55 and 12,138,072.92 is: 16,750,761.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,428,573.91 : 29,571,821.55 = 12,138,072.92 : x
  2. Step 2: Convert to fraction form
    21,428,573.91/29,571,821.55 = 12,138,072.92/x
  3. Step 3: Cross multiply
    21,428,573.91x = 29,571,821.55 × 12,138,072.92
  4. Step 4: Simplify right side
    21,428,573.91x = 358,944,926,314,162.62
  5. Step 5: Solve for x
    x = 358,944,926,314,162.62/21,428,573.91
  6. Step 6: Final answer
    x = 16,750,761.29

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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.