Home / 10,132.56-15,170.88-5,191.68

Finding the Fourth Proportional to 10,132.56, 15,170.88 and 5,191.68

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Solution

The fourth proportional to 10,132.56, 15,170.88 and 5,191.68 is: 7,773.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,132.56 : 15,170.88 = 5,191.68 : x
  2. Step 2: Convert to fraction form
    10,132.56/15,170.88 = 5,191.68/x
  3. Step 3: Cross multiply
    10,132.56x = 15,170.88 × 5,191.68
  4. Step 4: Simplify right side
    10,132.56x = 78,762,354.28
  5. Step 5: Solve for x
    x = 78,762,354.28/10,132.56
  6. Step 6: Final answer
    x = 7,773.19

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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.