Home / 10,489.14-15,729.66-4,247.55

Finding the Fourth Proportional to 10,489.14, 15,729.66 and 4,247.55

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Solution

The fourth proportional to 10,489.14, 15,729.66 and 4,247.55 is: 6,369.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,489.14 : 15,729.66 = 4,247.55 : x
  2. Step 2: Convert to fraction form
    10,489.14/15,729.66 = 4,247.55/x
  3. Step 3: Cross multiply
    10,489.14x = 15,729.66 × 4,247.55
  4. Step 4: Simplify right side
    10,489.14x = 66,812,517.33
  5. Step 5: Solve for x
    x = 66,812,517.33/10,489.14
  6. Step 6: Final answer
    x = 6,369.68

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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.