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Finding the Fourth Proportional to 20,016.76, 30,013.14 and 8,917.88

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Solution

The fourth proportional to 20,016.76, 30,013.14 and 8,917.88 is: 13,371.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,016.76 : 30,013.14 = 8,917.88 : x
  2. Step 2: Convert to fraction form
    20,016.76/30,013.14 = 8,917.88/x
  3. Step 3: Cross multiply
    20,016.76x = 30,013.14 × 8,917.88
  4. Step 4: Simplify right side
    20,016.76x = 267,653,580.94
  5. Step 5: Solve for x
    x = 267,653,580.94/20,016.76
  6. Step 6: Final answer
    x = 13,371.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.