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Finding the Fourth Proportional to 18,591.17, 27,904.97 and 13,646.79

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Solution

The fourth proportional to 18,591.17, 27,904.97 and 13,646.79 is: 20,483.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591.17 : 27,904.97 = 13,646.79 : x
  2. Step 2: Convert to fraction form
    18,591.17/27,904.97 = 13,646.79/x
  3. Step 3: Cross multiply
    18,591.17x = 27,904.97 × 13,646.79
  4. Step 4: Simplify right side
    18,591.17x = 380,813,299.66
  5. Step 5: Solve for x
    x = 380,813,299.66/18,591.17
  6. Step 6: Final answer
    x = 20,483.56

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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.