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Finding the Fourth Proportional to 18,061.15, 24,928.29 and 10,989.85

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Solution

The fourth proportional to 18,061.15, 24,928.29 and 10,989.85 is: 15,168.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,061.15 : 24,928.29 = 10,989.85 : x
  2. Step 2: Convert to fraction form
    18,061.15/24,928.29 = 10,989.85/x
  3. Step 3: Cross multiply
    18,061.15x = 24,928.29 × 10,989.85
  4. Step 4: Simplify right side
    18,061.15x = 273,958,167.86
  5. Step 5: Solve for x
    x = 273,958,167.86/18,061.15
  6. Step 6: Final answer
    x = 15,168.37

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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.