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Finding the Fourth Proportional to 15,016.14, 20,721.14 and 8,301.10

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Solution

The fourth proportional to 15,016.14, 20,721.14 and 8,301.10 is: 11,454.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.14 : 20,721.14 = 8,301.10 : x
  2. Step 2: Convert to fraction form
    15,016.14/20,721.14 = 8,301.10/x
  3. Step 3: Cross multiply
    15,016.14x = 20,721.14 × 8,301.10
  4. Step 4: Simplify right side
    15,016.14x = 172,008,255.25
  5. Step 5: Solve for x
    x = 172,008,255.25/15,016.14
  6. Step 6: Final answer
    x = 11,454.89

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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.