Home / 12,663,645.60-18,981,471.60-6,987,943.20

Finding the Fourth Proportional to 12,663,645.60, 18,981,471.60 and 6,987,943.20

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Solution

The fourth proportional to 12,663,645.60, 18,981,471.60 and 6,987,943.20 is: 10,474,191.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,663,645.60 : 18,981,471.60 = 6,987,943.20 : x
  2. Step 2: Convert to fraction form
    12,663,645.60/18,981,471.60 = 6,987,943.20/x
  3. Step 3: Cross multiply
    12,663,645.60x = 18,981,471.60 × 6,987,943.20
  4. Step 4: Simplify right side
    12,663,645.60x = 132,641,445,393,213.14
  5. Step 5: Solve for x
    x = 132,641,445,393,213.14/12,663,645.60
  6. Step 6: Final answer
    x = 10,474,191.21

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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.