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Finding the Fourth Proportional to 18,375.66, 27,559.85 and 5,228.15

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Solution

The fourth proportional to 18,375.66, 27,559.85 and 5,228.15 is: 7,841.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,375.66 : 27,559.85 = 5,228.15 : x
  2. Step 2: Convert to fraction form
    18,375.66/27,559.85 = 5,228.15/x
  3. Step 3: Cross multiply
    18,375.66x = 27,559.85 × 5,228.15
  4. Step 4: Simplify right side
    18,375.66x = 144,086,865.84
  5. Step 5: Solve for x
    x = 144,086,865.84/18,375.66
  6. Step 6: Final answer
    x = 7,841.18

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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.