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Finding the Fourth Proportional to 25,806.60, 38,738.70 and 15,424.20

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Solution

The fourth proportional to 25,806.60, 38,738.70 and 15,424.20 is: 23,153.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,806.60 : 38,738.70 = 15,424.20 : x
  2. Step 2: Convert to fraction form
    25,806.60/38,738.70 = 15,424.20/x
  3. Step 3: Cross multiply
    25,806.60x = 38,738.70 × 15,424.20
  4. Step 4: Simplify right side
    25,806.60x = 597,513,456.54
  5. Step 5: Solve for x
    x = 597,513,456.54/25,806.60
  6. Step 6: Final answer
    x = 23,153.51

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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.