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Finding the Fourth Proportional to 17,786.80, 26,680.20 and 14,870.80

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Solution

The fourth proportional to 17,786.80, 26,680.20 and 14,870.80 is: 22,306.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,786.80 : 26,680.20 = 14,870.80 : x
  2. Step 2: Convert to fraction form
    17,786.80/26,680.20 = 14,870.80/x
  3. Step 3: Cross multiply
    17,786.80x = 26,680.20 × 14,870.80
  4. Step 4: Simplify right side
    17,786.80x = 396,755,918.16
  5. Step 5: Solve for x
    x = 396,755,918.16/17,786.80
  6. Step 6: Final answer
    x = 22,306.20

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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.