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Finding the Fourth Proportional to 17,345.80, 23,930.80 and 11,380.78

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Solution

The fourth proportional to 17,345.80, 23,930.80 and 11,380.78 is: 15,701.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,345.80 : 23,930.80 = 11,380.78 : x
  2. Step 2: Convert to fraction form
    17,345.80/23,930.80 = 11,380.78/x
  3. Step 3: Cross multiply
    17,345.80x = 23,930.80 × 11,380.78
  4. Step 4: Simplify right side
    17,345.80x = 272,351,170.02
  5. Step 5: Solve for x
    x = 272,351,170.02/17,345.80
  6. Step 6: Final answer
    x = 15,701.27

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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.