Home / 10,129.28-15,194.48-3,974.72

Finding the Fourth Proportional to 10,129.28, 15,194.48 and 3,974.72

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Solution

The fourth proportional to 10,129.28, 15,194.48 and 3,974.72 is: 5,962.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.28 : 15,194.48 = 3,974.72 : x
  2. Step 2: Convert to fraction form
    10,129.28/15,194.48 = 3,974.72/x
  3. Step 3: Cross multiply
    10,129.28x = 15,194.48 × 3,974.72
  4. Step 4: Simplify right side
    10,129.28x = 60,393,803.55
  5. Step 5: Solve for x
    x = 60,393,803.55/10,129.28
  6. Step 6: Final answer
    x = 5,962.30

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Double scale
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Similar ratio
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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.