Home / 10,084.43-15,129.72-5,157.53

Finding the Fourth Proportional to 10,084.43, 15,129.72 and 5,157.53

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Solution

The fourth proportional to 10,084.43, 15,129.72 and 5,157.53 is: 7,737.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,084.43 : 15,129.72 = 5,157.53 : x
  2. Step 2: Convert to fraction form
    10,084.43/15,129.72 = 5,157.53/x
  3. Step 3: Cross multiply
    10,084.43x = 15,129.72 × 5,157.53
  4. Step 4: Simplify right side
    10,084.43x = 78,031,984.79
  5. Step 5: Solve for x
    x = 78,031,984.79/10,084.43
  6. Step 6: Final answer
    x = 7,737.87

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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.