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Finding the Fourth Proportional to 18,753.48, 28,130.04 and 7,067.52

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Solution

The fourth proportional to 18,753.48, 28,130.04 and 7,067.52 is: 10,601.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,753.48 : 28,130.04 = 7,067.52 : x
  2. Step 2: Convert to fraction form
    18,753.48/28,130.04 = 7,067.52/x
  3. Step 3: Cross multiply
    18,753.48x = 28,130.04 × 7,067.52
  4. Step 4: Simplify right side
    18,753.48x = 198,809,620.30
  5. Step 5: Solve for x
    x = 198,809,620.30/18,753.48
  6. Step 6: Final answer
    x = 10,601.21

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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.