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Finding the Fourth Proportional to 26,857.80, 40,209.90 and 16,489.80

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Solution

The fourth proportional to 26,857.80, 40,209.90 and 16,489.80 is: 24,687.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,857.80 : 40,209.90 = 16,489.80 : x
  2. Step 2: Convert to fraction form
    26,857.80/40,209.90 = 16,489.80/x
  3. Step 3: Cross multiply
    26,857.80x = 40,209.90 × 16,489.80
  4. Step 4: Simplify right side
    26,857.80x = 663,053,209.02
  5. Step 5: Solve for x
    x = 663,053,209.02/26,857.80
  6. Step 6: Final answer
    x = 24,687.55

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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.