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Finding the Fourth Proportional to 18,642.30, 27,963.44 and 15,348.47

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Solution

The fourth proportional to 18,642.30, 27,963.44 and 15,348.47 is: 23,022.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642.30 : 27,963.44 = 15,348.47 : x
  2. Step 2: Convert to fraction form
    18,642.30/27,963.44 = 15,348.47/x
  3. Step 3: Cross multiply
    18,642.30x = 27,963.44 × 15,348.47
  4. Step 4: Simplify right side
    18,642.30x = 429,195,860.93
  5. Step 5: Solve for x
    x = 429,195,860.93/18,642.30
  6. Step 6: Final answer
    x = 23,022.69

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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.