Home / 20,807,207.90-31,203,070.05-7,156,522.70

Finding the Fourth Proportional to 20,807,207.90, 31,203,070.05 and 7,156,522.70

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Solution

The fourth proportional to 20,807,207.90, 31,203,070.05 and 7,156,522.70 is: 10,732,121.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807,207.90 : 31,203,070.05 = 7,156,522.70 : x
  2. Step 2: Convert to fraction form
    20,807,207.90/31,203,070.05 = 7,156,522.70/x
  3. Step 3: Cross multiply
    20,807,207.90x = 31,203,070.05 × 7,156,522.70
  4. Step 4: Simplify right side
    20,807,207.90x = 223,305,479,122,515.16
  5. Step 5: Solve for x
    x = 223,305,479,122,515.16/20,807,207.90
  6. Step 6: Final answer
    x = 10,732,121.30

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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.