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Finding the Fourth Proportional to 25,955.75, 38,938.49 and 12,104.75

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Solution

The fourth proportional to 25,955.75, 38,938.49 and 12,104.75 is: 18,159.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,955.75 : 38,938.49 = 12,104.75 : x
  2. Step 2: Convert to fraction form
    25,955.75/38,938.49 = 12,104.75/x
  3. Step 3: Cross multiply
    25,955.75x = 38,938.49 × 12,104.75
  4. Step 4: Simplify right side
    25,955.75x = 471,340,686.83
  5. Step 5: Solve for x
    x = 471,340,686.83/25,955.75
  6. Step 6: Final answer
    x = 18,159.39

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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.