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Finding the Fourth Proportional to 18,394.59, 27,439.17 and 17,779.60

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Solution

The fourth proportional to 18,394.59, 27,439.17 and 17,779.60 is: 26,521.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,394.59 : 27,439.17 = 17,779.60 : x
  2. Step 2: Convert to fraction form
    18,394.59/27,439.17 = 17,779.60/x
  3. Step 3: Cross multiply
    18,394.59x = 27,439.17 × 17,779.60
  4. Step 4: Simplify right side
    18,394.59x = 487,857,534.57
  5. Step 5: Solve for x
    x = 487,857,534.57/18,394.59
  6. Step 6: Final answer
    x = 26,521.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.