Home / 25,981.75-38,979.24-7,261.80

Finding the Fourth Proportional to 25,981.75, 38,979.24 and 7,261.80

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Solution

The fourth proportional to 25,981.75, 38,979.24 and 7,261.80 is: 10,894.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,981.75 : 38,979.24 = 7,261.80 : x
  2. Step 2: Convert to fraction form
    25,981.75/38,979.24 = 7,261.80/x
  3. Step 3: Cross multiply
    25,981.75x = 38,979.24 × 7,261.80
  4. Step 4: Simplify right side
    25,981.75x = 283,059,445.03
  5. Step 5: Solve for x
    x = 283,059,445.03/25,981.75
  6. Step 6: Final answer
    x = 10,894.55

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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.