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Finding the Fourth Proportional to 17,938.86, 26,871.22 and 10,520.98

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Solution

The fourth proportional to 17,938.86, 26,871.22 and 10,520.98 is: 15,759.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,938.86 : 26,871.22 = 10,520.98 : x
  2. Step 2: Convert to fraction form
    17,938.86/26,871.22 = 10,520.98/x
  3. Step 3: Cross multiply
    17,938.86x = 26,871.22 × 10,520.98
  4. Step 4: Simplify right side
    17,938.86x = 282,711,568.20
  5. Step 5: Solve for x
    x = 282,711,568.20/17,938.86
  6. Step 6: Final answer
    x = 15,759.73

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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.