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Finding the Fourth Proportional to 13,753.87, 18,979.02 and 10,928.08

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Solution

The fourth proportional to 13,753.87, 18,979.02 and 10,928.08 is: 15,079.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,753.87 : 18,979.02 = 10,928.08 : x
  2. Step 2: Convert to fraction form
    13,753.87/18,979.02 = 10,928.08/x
  3. Step 3: Cross multiply
    13,753.87x = 18,979.02 × 10,928.08
  4. Step 4: Simplify right side
    13,753.87x = 207,404,272.61
  5. Step 5: Solve for x
    x = 207,404,272.61/13,753.87
  6. Step 6: Final answer
    x = 15,079.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.