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Finding the Fourth Proportional to 18,642.37, 27,963.78 and 5,494.99

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Solution

The fourth proportional to 18,642.37, 27,963.78 and 5,494.99 is: 8,242.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642.37 : 27,963.78 = 5,494.99 : x
  2. Step 2: Convert to fraction form
    18,642.37/27,963.78 = 5,494.99/x
  3. Step 3: Cross multiply
    18,642.37x = 27,963.78 × 5,494.99
  4. Step 4: Simplify right side
    18,642.37x = 153,660,691.46
  5. Step 5: Solve for x
    x = 153,660,691.46/18,642.37
  6. Step 6: Final answer
    x = 8,242.55

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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.