Home / 17,877.40-24,670.92-9,919.78

Finding the Fourth Proportional to 17,877.40, 24,670.92 and 9,919.78

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Solution

The fourth proportional to 17,877.40, 24,670.92 and 9,919.78 is: 13,689.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,877.40 : 24,670.92 = 9,919.78 : x
  2. Step 2: Convert to fraction form
    17,877.40/24,670.92 = 9,919.78/x
  3. Step 3: Cross multiply
    17,877.40x = 24,670.92 × 9,919.78
  4. Step 4: Simplify right side
    17,877.40x = 244,730,098.80
  5. Step 5: Solve for x
    x = 244,730,098.80/17,877.40
  6. Step 6: Final answer
    x = 13,689.36

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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.