Home / 15,461.68-21,337.14-8,388.12

Finding the Fourth Proportional to 15,461.68, 21,337.14 and 8,388.12

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Solution

The fourth proportional to 15,461.68, 21,337.14 and 8,388.12 is: 11,575.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,461.68 : 21,337.14 = 8,388.12 : x
  2. Step 2: Convert to fraction form
    15,461.68/21,337.14 = 8,388.12/x
  3. Step 3: Cross multiply
    15,461.68x = 21,337.14 × 8,388.12
  4. Step 4: Simplify right side
    15,461.68x = 178,978,490.78
  5. Step 5: Solve for x
    x = 178,978,490.78/15,461.68
  6. Step 6: Final answer
    x = 11,575.62

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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.