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Finding the Fourth Proportional to 25,855.92, 38,724.12 and 15,444.72

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Solution

The fourth proportional to 25,855.92, 38,724.12 and 15,444.72 is: 23,131.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,855.92 : 38,724.12 = 15,444.72 : x
  2. Step 2: Convert to fraction form
    25,855.92/38,724.12 = 15,444.72/x
  3. Step 3: Cross multiply
    25,855.92x = 38,724.12 × 15,444.72
  4. Step 4: Simplify right side
    25,855.92x = 598,083,190.65
  5. Step 5: Solve for x
    x = 598,083,190.65/25,855.92
  6. Step 6: Final answer
    x = 23,131.38

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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.