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Finding the Fourth Proportional to 12,591,871.80, 18,906,815.70 and 10,060,006.20

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Solution

The fourth proportional to 12,591,871.80, 18,906,815.70 and 10,060,006.20 is: 15,105,195.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591,871.80 : 18,906,815.70 = 10,060,006.20 : x
  2. Step 2: Convert to fraction form
    12,591,871.80/18,906,815.70 = 10,060,006.20/x
  3. Step 3: Cross multiply
    12,591,871.80x = 18,906,815.70 × 10,060,006.20
  4. Step 4: Simplify right side
    12,591,871.80x = 190,202,683,164,257.31
  5. Step 5: Solve for x
    x = 190,202,683,164,257.31/12,591,871.80
  6. Step 6: Final answer
    x = 15,105,195.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.