Home / 15,853,979.18-21,877,155.66-8,789,761.42

Finding the Fourth Proportional to 15,853,979.18, 21,877,155.66 and 8,789,761.42

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Solution

The fourth proportional to 15,853,979.18, 21,877,155.66 and 8,789,761.42 is: 12,129,130.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,853,979.18 : 21,877,155.66 = 8,789,761.42 : x
  2. Step 2: Convert to fraction form
    15,853,979.18/21,877,155.66 = 8,789,761.42/x
  3. Step 3: Cross multiply
    15,853,979.18x = 21,877,155.66 × 8,789,761.42
  4. Step 4: Simplify right side
    15,853,979.18x = 192,294,978,799,602.62
  5. Step 5: Solve for x
    x = 192,294,978,799,602.62/15,853,979.18
  6. Step 6: Final answer
    x = 12,129,130.27

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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.