Home / 25,729.20-38,584.20-10,143.60

Finding the Fourth Proportional to 25,729.20, 38,584.20 and 10,143.60

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Solution

The fourth proportional to 25,729.20, 38,584.20 and 10,143.60 is: 15,211.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,729.20 : 38,584.20 = 10,143.60 : x
  2. Step 2: Convert to fraction form
    25,729.20/38,584.20 = 10,143.60/x
  3. Step 3: Cross multiply
    25,729.20x = 38,584.20 × 10,143.60
  4. Step 4: Simplify right side
    25,729.20x = 391,382,691.12
  5. Step 5: Solve for x
    x = 391,382,691.12/25,729.20
  6. Step 6: Final answer
    x = 15,211.62

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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.