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Finding the Fourth Proportional to 18,503.52, 27,755.55 and 8,641.50

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Solution

The fourth proportional to 18,503.52, 27,755.55 and 8,641.50 is: 12,962.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,503.52 : 27,755.55 = 8,641.50 : x
  2. Step 2: Convert to fraction form
    18,503.52/27,755.55 = 8,641.50/x
  3. Step 3: Cross multiply
    18,503.52x = 27,755.55 × 8,641.50
  4. Step 4: Simplify right side
    18,503.52x = 239,849,585.33
  5. Step 5: Solve for x
    x = 239,849,585.33/18,503.52
  6. Step 6: Final answer
    x = 12,962.38

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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.