Home / 10,288.20-15,432.30-5,104.20

Finding the Fourth Proportional to 10,288.20, 15,432.30 and 5,104.20

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Solution

The fourth proportional to 10,288.20, 15,432.30 and 5,104.20 is: 7,656.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,288.20 : 15,432.30 = 5,104.20 : x
  2. Step 2: Convert to fraction form
    10,288.20/15,432.30 = 5,104.20/x
  3. Step 3: Cross multiply
    10,288.20x = 15,432.30 × 5,104.20
  4. Step 4: Simplify right side
    10,288.20x = 78,769,545.66
  5. Step 5: Solve for x
    x = 78,769,545.66/10,288.20
  6. Step 6: Final answer
    x = 7,656.30

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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.