Home / 12,479,743.20-18,719,614.80-8,369,932.80

Finding the Fourth Proportional to 12,479,743.20, 18,719,614.80 and 8,369,932.80

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Solution

The fourth proportional to 12,479,743.20, 18,719,614.80 and 8,369,932.80 is: 12,554,899.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479,743.20 : 18,719,614.80 = 8,369,932.80 : x
  2. Step 2: Convert to fraction form
    12,479,743.20/18,719,614.80 = 8,369,932.80/x
  3. Step 3: Cross multiply
    12,479,743.20x = 18,719,614.80 × 8,369,932.80
  4. Step 4: Simplify right side
    12,479,743.20x = 156,681,917,917,885.44
  5. Step 5: Solve for x
    x = 156,681,917,917,885.44/12,479,743.20
  6. Step 6: Final answer
    x = 12,554,899.20

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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.