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Finding the Fourth Proportional to 27,251.80, 40,877.70 and 17,920.60

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Solution

The fourth proportional to 27,251.80, 40,877.70 and 17,920.60 is: 26,880.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,251.80 : 40,877.70 = 17,920.60 : x
  2. Step 2: Convert to fraction form
    27,251.80/40,877.70 = 17,920.60/x
  3. Step 3: Cross multiply
    27,251.80x = 40,877.70 × 17,920.60
  4. Step 4: Simplify right side
    27,251.80x = 732,552,910.62
  5. Step 5: Solve for x
    x = 732,552,910.62/27,251.80
  6. Step 6: Final answer
    x = 26,880.90

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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.