Home / 16,987.55-23,442.97-9,912.61

Finding the Fourth Proportional to 16,987.55, 23,442.97 and 9,912.61

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Solution

The fourth proportional to 16,987.55, 23,442.97 and 9,912.61 is: 13,679.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,987.55 : 23,442.97 = 9,912.61 : x
  2. Step 2: Convert to fraction form
    16,987.55/23,442.97 = 9,912.61/x
  3. Step 3: Cross multiply
    16,987.55x = 23,442.97 × 9,912.61
  4. Step 4: Simplify right side
    16,987.55x = 232,380,876.86
  5. Step 5: Solve for x
    x = 232,380,876.86/16,987.55
  6. Step 6: Final answer
    x = 13,679.48

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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.