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Finding the Fourth Proportional to 27,174.60, 40,761.90 and 18,880.20

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Solution

The fourth proportional to 27,174.60, 40,761.90 and 18,880.20 is: 28,320.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,174.60 : 40,761.90 = 18,880.20 : x
  2. Step 2: Convert to fraction form
    27,174.60/40,761.90 = 18,880.20/x
  3. Step 3: Cross multiply
    27,174.60x = 40,761.90 × 18,880.20
  4. Step 4: Simplify right side
    27,174.60x = 769,592,824.38
  5. Step 5: Solve for x
    x = 769,592,824.38/27,174.60
  6. Step 6: Final answer
    x = 28,320.30

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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.