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Finding the Fourth Proportional to 15,001.44, 20,719.44 and 11,456.88

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Solution

The fourth proportional to 15,001.44, 20,719.44 and 11,456.88 is: 15,823.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,001.44 : 20,719.44 = 11,456.88 : x
  2. Step 2: Convert to fraction form
    15,001.44/20,719.44 = 11,456.88/x
  3. Step 3: Cross multiply
    15,001.44x = 20,719.44 × 11,456.88
  4. Step 4: Simplify right side
    15,001.44x = 237,380,137.75
  5. Step 5: Solve for x
    x = 237,380,137.75/15,001.44
  6. Step 6: Final answer
    x = 15,823.82

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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.