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Finding the Fourth Proportional to 18,734.31, 25,842.04 and 12,358.64

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Solution

The fourth proportional to 18,734.31, 25,842.04 and 12,358.64 is: 17,047.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,734.31 : 25,842.04 = 12,358.64 : x
  2. Step 2: Convert to fraction form
    18,734.31/25,842.04 = 12,358.64/x
  3. Step 3: Cross multiply
    18,734.31x = 25,842.04 × 12,358.64
  4. Step 4: Simplify right side
    18,734.31x = 319,372,357.57
  5. Step 5: Solve for x
    x = 319,372,357.57/18,734.31
  6. Step 6: Final answer
    x = 17,047.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.