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Finding the Fourth Proportional to 18,658.44, 27,987.66 and 14,226.12

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Solution

The fourth proportional to 18,658.44, 27,987.66 and 14,226.12 is: 21,339.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.44 : 27,987.66 = 14,226.12 : x
  2. Step 2: Convert to fraction form
    18,658.44/27,987.66 = 14,226.12/x
  3. Step 3: Cross multiply
    18,658.44x = 27,987.66 × 14,226.12
  4. Step 4: Simplify right side
    18,658.44x = 398,155,809.68
  5. Step 5: Solve for x
    x = 398,155,809.68/18,658.44
  6. Step 6: Final answer
    x = 21,339.18

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Similar ratio
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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.