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Finding the Fourth Proportional to 16,778.80, 25,175.40 and 8,570.80

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Solution

The fourth proportional to 16,778.80, 25,175.40 and 8,570.80 is: 12,859.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,778.80 : 25,175.40 = 8,570.80 : x
  2. Step 2: Convert to fraction form
    16,778.80/25,175.40 = 8,570.80/x
  3. Step 3: Cross multiply
    16,778.80x = 25,175.40 × 8,570.80
  4. Step 4: Simplify right side
    16,778.80x = 215,773,318.32
  5. Step 5: Solve for x
    x = 215,773,318.32/16,778.80
  6. Step 6: Final answer
    x = 12,859.88

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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.