Home / 20,707,245.90-31,060,868.85-7,921,169.10

Finding the Fourth Proportional to 20,707,245.90, 31,060,868.85 and 7,921,169.10

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Solution

The fourth proportional to 20,707,245.90, 31,060,868.85 and 7,921,169.10 is: 11,881,753.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707,245.90 : 31,060,868.85 = 7,921,169.10 : x
  2. Step 2: Convert to fraction form
    20,707,245.90/31,060,868.85 = 7,921,169.10/x
  3. Step 3: Cross multiply
    20,707,245.90x = 31,060,868.85 × 7,921,169.10
  4. Step 4: Simplify right side
    20,707,245.90x = 246,038,394,553,772.53
  5. Step 5: Solve for x
    x = 246,038,394,553,772.53/20,707,245.90
  6. Step 6: Final answer
    x = 11,881,753.65

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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.