Home / 10,081.20-15,116.40-4,231.20

Finding the Fourth Proportional to 10,081.20, 15,116.40 and 4,231.20

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Solution

The fourth proportional to 10,081.20, 15,116.40 and 4,231.20 is: 6,344.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,081.20 : 15,116.40 = 4,231.20 : x
  2. Step 2: Convert to fraction form
    10,081.20/15,116.40 = 4,231.20/x
  3. Step 3: Cross multiply
    10,081.20x = 15,116.40 × 4,231.20
  4. Step 4: Simplify right side
    10,081.20x = 63,960,511.68
  5. Step 5: Solve for x
    x = 63,960,511.68/10,081.20
  6. Step 6: Final answer
    x = 6,344.53

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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.