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Finding the Fourth Proportional to 18,642.54, 27,954.15 and 5,493.18

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Solution

The fourth proportional to 18,642.54, 27,954.15 and 5,493.18 is: 8,236.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642.54 : 27,954.15 = 5,493.18 : x
  2. Step 2: Convert to fraction form
    18,642.54/27,954.15 = 5,493.18/x
  3. Step 3: Cross multiply
    18,642.54x = 27,954.15 × 5,493.18
  4. Step 4: Simplify right side
    18,642.54x = 153,557,177.70
  5. Step 5: Solve for x
    x = 153,557,177.70/18,642.54
  6. Step 6: Final answer
    x = 8,236.92

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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.