Home / 13,432.38-20,147.49-8,487.60

Finding the Fourth Proportional to 13,432.38, 20,147.49 and 8,487.60

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Solution

The fourth proportional to 13,432.38, 20,147.49 and 8,487.60 is: 12,730.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,432.38 : 20,147.49 = 8,487.60 : x
  2. Step 2: Convert to fraction form
    13,432.38/20,147.49 = 8,487.60/x
  3. Step 3: Cross multiply
    13,432.38x = 20,147.49 × 8,487.60
  4. Step 4: Simplify right side
    13,432.38x = 171,003,836.12
  5. Step 5: Solve for x
    x = 171,003,836.12/13,432.38
  6. Step 6: Final answer
    x = 12,730.72

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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.