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Finding the Fourth Proportional to 18,432.59, 27,620.87 and 13,505.49

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Solution

The fourth proportional to 18,432.59, 27,620.87 and 13,505.49 is: 20,237.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,432.59 : 27,620.87 = 13,505.49 : x
  2. Step 2: Convert to fraction form
    18,432.59/27,620.87 = 13,505.49/x
  3. Step 3: Cross multiply
    18,432.59x = 27,620.87 × 13,505.49
  4. Step 4: Simplify right side
    18,432.59x = 373,033,316.05
  5. Step 5: Solve for x
    x = 373,033,316.05/18,432.59
  6. Step 6: Final answer
    x = 20,237.71

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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.