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Finding the Fourth Proportional to 25,839.72, 38,759.04 and 7,119.68

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Solution

The fourth proportional to 25,839.72, 38,759.04 and 7,119.68 is: 10,679.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,839.72 : 38,759.04 = 7,119.68 : x
  2. Step 2: Convert to fraction form
    25,839.72/38,759.04 = 7,119.68/x
  3. Step 3: Cross multiply
    25,839.72x = 38,759.04 × 7,119.68
  4. Step 4: Simplify right side
    25,839.72x = 275,951,768.11
  5. Step 5: Solve for x
    x = 275,951,768.11/25,839.72
  6. Step 6: Final answer
    x = 10,679.36

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1.5x scale

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.