Home / 20,229,781.80-30,344,672.70-12,151,878.60

Finding the Fourth Proportional to 20,229,781.80, 30,344,672.70 and 12,151,878.60

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Solution

The fourth proportional to 20,229,781.80, 30,344,672.70 and 12,151,878.60 is: 18,227,817.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,229,781.80 : 30,344,672.70 = 12,151,878.60 : x
  2. Step 2: Convert to fraction form
    20,229,781.80/30,344,672.70 = 12,151,878.60/x
  3. Step 3: Cross multiply
    20,229,781.80x = 30,344,672.70 × 12,151,878.60
  4. Step 4: Simplify right side
    20,229,781.80x = 368,744,778,807,134.19
  5. Step 5: Solve for x
    x = 368,744,778,807,134.19/20,229,781.80
  6. Step 6: Final answer
    x = 18,227,817.90

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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.