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Finding the Fourth Proportional to 13,388.18, 20,061.14 and 10,877.11

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Solution

The fourth proportional to 13,388.18, 20,061.14 and 10,877.11 is: 16,298.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.18 : 20,061.14 = 10,877.11 : x
  2. Step 2: Convert to fraction form
    13,388.18/20,061.14 = 10,877.11/x
  3. Step 3: Cross multiply
    13,388.18x = 20,061.14 × 10,877.11
  4. Step 4: Simplify right side
    13,388.18x = 218,207,121.97
  5. Step 5: Solve for x
    x = 218,207,121.97/13,388.18
  6. Step 6: Final answer
    x = 16,298.50

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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.