Home / 10,213.98-15,320.97-2,818.20

Finding the Fourth Proportional to 10,213.98, 15,320.97 and 2,818.20

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Solution

The fourth proportional to 10,213.98, 15,320.97 and 2,818.20 is: 4,227.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,213.98 : 15,320.97 = 2,818.20 : x
  2. Step 2: Convert to fraction form
    10,213.98/15,320.97 = 2,818.20/x
  3. Step 3: Cross multiply
    10,213.98x = 15,320.97 × 2,818.20
  4. Step 4: Simplify right side
    10,213.98x = 43,177,557.65
  5. Step 5: Solve for x
    x = 43,177,557.65/10,213.98
  6. Step 6: Final answer
    x = 4,227.30

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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.