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Finding the Fourth Proportional to 18,218.44, 25,140.18 and 10,765

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Solution

The fourth proportional to 18,218.44, 25,140.18 and 10,765 is: 14,854.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,218.44 : 25,140.18 = 10,765 : x
  2. Step 2: Convert to fraction form
    18,218.44/25,140.18 = 10,765/x
  3. Step 3: Cross multiply
    18,218.44x = 25,140.18 × 10,765
  4. Step 4: Simplify right side
    18,218.44x = 270,634,037.70
  5. Step 5: Solve for x
    x = 270,634,037.70/18,218.44
  6. Step 6: Final answer
    x = 14,854.95

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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.