Home / 18,754.39-28,118.34-9,387.70

Finding the Fourth Proportional to 18,754.39, 28,118.34 and 9,387.70

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Solution

The fourth proportional to 18,754.39, 28,118.34 and 9,387.70 is: 14,074.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.39 : 28,118.34 = 9,387.70 : x
  2. Step 2: Convert to fraction form
    18,754.39/28,118.34 = 9,387.70/x
  3. Step 3: Cross multiply
    18,754.39x = 28,118.34 × 9,387.70
  4. Step 4: Simplify right side
    18,754.39x = 263,966,470.12
  5. Step 5: Solve for x
    x = 263,966,470.12/18,754.39
  6. Step 6: Final answer
    x = 14,074.92

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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.