Home / 17,781.39-26,676.55-8,418.88

Finding the Fourth Proportional to 17,781.39, 26,676.55 and 8,418.88

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Solution

The fourth proportional to 17,781.39, 26,676.55 and 8,418.88 is: 12,630.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,781.39 : 26,676.55 = 8,418.88 : x
  2. Step 2: Convert to fraction form
    17,781.39/26,676.55 = 8,418.88/x
  3. Step 3: Cross multiply
    17,781.39x = 26,676.55 × 8,418.88
  4. Step 4: Simplify right side
    17,781.39x = 224,586,717.13
  5. Step 5: Solve for x
    x = 224,586,717.13/17,781.39
  6. Step 6: Final answer
    x = 12,630.44

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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.