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Finding the Fourth Proportional to 18,337.97, 27,422.91 and 13,661.21

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Solution

The fourth proportional to 18,337.97, 27,422.91 and 13,661.21 is: 20,429.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,337.97 : 27,422.91 = 13,661.21 : x
  2. Step 2: Convert to fraction form
    18,337.97/27,422.91 = 13,661.21/x
  3. Step 3: Cross multiply
    18,337.97x = 27,422.91 × 13,661.21
  4. Step 4: Simplify right side
    18,337.97x = 374,630,132.32
  5. Step 5: Solve for x
    x = 374,630,132.32/18,337.97
  6. Step 6: Final answer
    x = 20,429.20

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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.