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Finding the Fourth Proportional to 18,335.97, 27,419.91 and 13,659.21

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Solution

The fourth proportional to 18,335.97, 27,419.91 and 13,659.21 is: 20,426.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,335.97 : 27,419.91 = 13,659.21 : x
  2. Step 2: Convert to fraction form
    18,335.97/27,419.91 = 13,659.21/x
  3. Step 3: Cross multiply
    18,335.97x = 27,419.91 × 13,659.21
  4. Step 4: Simplify right side
    18,335.97x = 374,534,308.87
  5. Step 5: Solve for x
    x = 374,534,308.87/18,335.97
  6. Step 6: Final answer
    x = 20,426.21

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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.