Home / 10,138.65-15,207.98-3,213.15

Finding the Fourth Proportional to 10,138.65, 15,207.98 and 3,213.15

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Solution

The fourth proportional to 10,138.65, 15,207.98 and 3,213.15 is: 4,819.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,138.65 : 15,207.98 = 3,213.15 : x
  2. Step 2: Convert to fraction form
    10,138.65/15,207.98 = 3,213.15/x
  3. Step 3: Cross multiply
    10,138.65x = 15,207.98 × 3,213.15
  4. Step 4: Simplify right side
    10,138.65x = 48,865,504.87
  5. Step 5: Solve for x
    x = 48,865,504.87/10,138.65
  6. Step 6: Final answer
    x = 4,819.73

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Similar ratio
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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.