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Finding the Fourth Proportional to 17,781.68, 26,693.13 and 10,391.44

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Solution

The fourth proportional to 17,781.68, 26,693.13 and 10,391.44 is: 15,599.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,781.68 : 26,693.13 = 10,391.44 : x
  2. Step 2: Convert to fraction form
    17,781.68/26,693.13 = 10,391.44/x
  3. Step 3: Cross multiply
    17,781.68x = 26,693.13 × 10,391.44
  4. Step 4: Simplify right side
    17,781.68x = 277,380,022.64
  5. Step 5: Solve for x
    x = 277,380,022.64/17,781.68
  6. Step 6: Final answer
    x = 15,599.20

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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.