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Finding the Fourth Proportional to 27,191.70, 40,787.55 and 25,660.80

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Solution

The fourth proportional to 27,191.70, 40,787.55 and 25,660.80 is: 38,491.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,191.70 : 40,787.55 = 25,660.80 : x
  2. Step 2: Convert to fraction form
    27,191.70/40,787.55 = 25,660.80/x
  3. Step 3: Cross multiply
    27,191.70x = 40,787.55 × 25,660.80
  4. Step 4: Simplify right side
    27,191.70x = 1,046,641,163.04
  5. Step 5: Solve for x
    x = 1,046,641,163.04/27,191.70
  6. Step 6: Final answer
    x = 38,491.20

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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.