Home / 10,139.88-15,209.82-4,292.52

Finding the Fourth Proportional to 10,139.88, 15,209.82 and 4,292.52

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Solution

The fourth proportional to 10,139.88, 15,209.82 and 4,292.52 is: 6,438.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,139.88 : 15,209.82 = 4,292.52 : x
  2. Step 2: Convert to fraction form
    10,139.88/15,209.82 = 4,292.52/x
  3. Step 3: Cross multiply
    10,139.88x = 15,209.82 × 4,292.52
  4. Step 4: Simplify right side
    10,139.88x = 65,288,456.55
  5. Step 5: Solve for x
    x = 65,288,456.55/10,139.88
  6. Step 6: Final answer
    x = 6,438.78

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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.