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Finding the Fourth Proportional to 17,377.80, 23,978.02 and 10,999.90

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Solution

The fourth proportional to 17,377.80, 23,978.02 and 10,999.90 is: 15,177.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,377.80 : 23,978.02 = 10,999.90 : x
  2. Step 2: Convert to fraction form
    17,377.80/23,978.02 = 10,999.90/x
  3. Step 3: Cross multiply
    17,377.80x = 23,978.02 × 10,999.90
  4. Step 4: Simplify right side
    17,377.80x = 263,755,794.70
  5. Step 5: Solve for x
    x = 263,755,794.70/17,377.80
  6. Step 6: Final answer
    x = 15,177.75

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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.