Home / 15,462.28-21,338.10-8,388.76

Finding the Fourth Proportional to 15,462.28, 21,338.10 and 8,388.76

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Solution

The fourth proportional to 15,462.28, 21,338.10 and 8,388.76 is: 11,576.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,462.28 : 21,338.10 = 8,388.76 : x
  2. Step 2: Convert to fraction form
    15,462.28/21,338.10 = 8,388.76/x
  3. Step 3: Cross multiply
    15,462.28x = 21,338.10 × 8,388.76
  4. Step 4: Simplify right side
    15,462.28x = 179,000,199.76
  5. Step 5: Solve for x
    x = 179,000,199.76/15,462.28
  6. Step 6: Final answer
    x = 11,576.57

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Half scale
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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.