Home / 18,388.48-25,377.50-11,217.76

Finding the Fourth Proportional to 18,388.48, 25,377.50 and 11,217.76

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Solution

The fourth proportional to 18,388.48, 25,377.50 and 11,217.76 is: 15,481.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388.48 : 25,377.50 = 11,217.76 : x
  2. Step 2: Convert to fraction form
    18,388.48/25,377.50 = 11,217.76/x
  3. Step 3: Cross multiply
    18,388.48x = 25,377.50 × 11,217.76
  4. Step 4: Simplify right side
    18,388.48x = 284,678,704.40
  5. Step 5: Solve for x
    x = 284,678,704.40/18,388.48
  6. Step 6: Final answer
    x = 15,481.36

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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.