Home / 28,328,939.60-42,472,414.20-12,141,640.40

Finding the Fourth Proportional to 28,328,939.60, 42,472,414.20 and 12,141,640.40

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Solution

The fourth proportional to 28,328,939.60, 42,472,414.20 and 12,141,640.40 is: 18,203,462.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,328,939.60 : 42,472,414.20 = 12,141,640.40 : x
  2. Step 2: Convert to fraction form
    28,328,939.60/42,472,414.20 = 12,141,640.40/x
  3. Step 3: Cross multiply
    28,328,939.60x = 42,472,414.20 × 12,141,640.40
  4. Step 4: Simplify right side
    28,328,939.60x = 515,684,780,136,253.75
  5. Step 5: Solve for x
    x = 515,684,780,136,253.75/28,328,939.60
  6. Step 6: Final answer
    x = 18,203,462.16

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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.