Home / 21,515,890.49-29,691,169.27-11,726,140.38

Finding the Fourth Proportional to 21,515,890.49, 29,691,169.27 and 11,726,140.38

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Solution

The fourth proportional to 21,515,890.49, 29,691,169.27 and 11,726,140.38 is: 16,181,659.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,515,890.49 : 29,691,169.27 = 11,726,140.38 : x
  2. Step 2: Convert to fraction form
    21,515,890.49/29,691,169.27 = 11,726,140.38/x
  3. Step 3: Cross multiply
    21,515,890.49x = 29,691,169.27 × 11,726,140.38
  4. Step 4: Simplify right side
    21,515,890.49x = 348,162,818,847,731.44
  5. Step 5: Solve for x
    x = 348,162,818,847,731.44/21,515,890.49
  6. Step 6: Final answer
    x = 16,181,659.74

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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.