Home / 15,147.10-20,901.81-8,432.29

Finding the Fourth Proportional to 15,147.10, 20,901.81 and 8,432.29

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Solution

The fourth proportional to 15,147.10, 20,901.81 and 8,432.29 is: 11,635.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,147.10 : 20,901.81 = 8,432.29 : x
  2. Step 2: Convert to fraction form
    15,147.10/20,901.81 = 8,432.29/x
  3. Step 3: Cross multiply
    15,147.10x = 20,901.81 × 8,432.29
  4. Step 4: Simplify right side
    15,147.10x = 176,250,123.44
  5. Step 5: Solve for x
    x = 176,250,123.44/15,147.10
  6. Step 6: Final answer
    x = 11,635.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.