Home / 25,898.44-38,781.78-17,120.20

Finding the Fourth Proportional to 25,898.44, 38,781.78 and 17,120.20

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Solution

The fourth proportional to 25,898.44, 38,781.78 and 17,120.20 is: 25,636.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,898.44 : 38,781.78 = 17,120.20 : x
  2. Step 2: Convert to fraction form
    25,898.44/38,781.78 = 17,120.20/x
  3. Step 3: Cross multiply
    25,898.44x = 38,781.78 × 17,120.20
  4. Step 4: Simplify right side
    25,898.44x = 663,951,829.96
  5. Step 5: Solve for x
    x = 663,951,829.96/25,898.44
  6. Step 6: Final answer
    x = 25,636.75

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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.