Home / 20,876,883.20-31,305,079.56-8,578,618.60

Finding the Fourth Proportional to 20,876,883.20, 31,305,079.56 and 8,578,618.60

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Solution

The fourth proportional to 20,876,883.20, 31,305,079.56 and 8,578,618.60 is: 12,863,717.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,876,883.20 : 31,305,079.56 = 8,578,618.60 : x
  2. Step 2: Convert to fraction form
    20,876,883.20/31,305,079.56 = 8,578,618.60/x
  3. Step 3: Cross multiply
    20,876,883.20x = 31,305,079.56 × 8,578,618.60
  4. Step 4: Simplify right side
    20,876,883.20x = 268,554,337,787,895.78
  5. Step 5: Solve for x
    x = 268,554,337,787,895.78/20,876,883.20
  6. Step 6: Final answer
    x = 12,863,717.98

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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.