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Finding the Fourth Proportional to 28,363.44, 42,545.17 and 8,642.02

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Solution

The fourth proportional to 28,363.44, 42,545.17 and 8,642.02 is: 12,963.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,363.44 : 42,545.17 = 8,642.02 : x
  2. Step 2: Convert to fraction form
    28,363.44/42,545.17 = 8,642.02/x
  3. Step 3: Cross multiply
    28,363.44x = 42,545.17 × 8,642.02
  4. Step 4: Simplify right side
    28,363.44x = 367,676,098.90
  5. Step 5: Solve for x
    x = 367,676,098.90/28,363.44
  6. Step 6: Final answer
    x = 12,963.03

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1.5x scale

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.