Home / 21,649,818.60-29,876,747.94-12,947,991.03

Finding the Fourth Proportional to 21,649,818.60, 29,876,747.94 and 12,947,991.03

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Solution

The fourth proportional to 21,649,818.60, 29,876,747.94 and 12,947,991.03 is: 17,868,226.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,649,818.60 : 29,876,747.94 = 12,947,991.03 : x
  2. Step 2: Convert to fraction form
    21,649,818.60/29,876,747.94 = 12,947,991.03/x
  3. Step 3: Cross multiply
    21,649,818.60x = 29,876,747.94 × 12,947,991.03
  4. Step 4: Simplify right side
    21,649,818.60x = 386,843,864,332,691
  5. Step 5: Solve for x
    x = 386,843,864,332,691/21,649,818.60
  6. Step 6: Final answer
    x = 17,868,226.59

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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.