Home / 11,143.68-15,343.20-8,482.56

Finding the Fourth Proportional to 11,143.68, 15,343.20 and 8,482.56

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Solution

The fourth proportional to 11,143.68, 15,343.20 and 8,482.56 is: 11,679.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.68 : 15,343.20 = 8,482.56 : x
  2. Step 2: Convert to fraction form
    11,143.68/15,343.20 = 8,482.56/x
  3. Step 3: Cross multiply
    11,143.68x = 15,343.20 × 8,482.56
  4. Step 4: Simplify right side
    11,143.68x = 130,149,614.59
  5. Step 5: Solve for x
    x = 130,149,614.59/11,143.68
  6. Step 6: Final answer
    x = 11,679.23

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.