Home / 25,765.95-38,639.82-12,255.54

Finding the Fourth Proportional to 25,765.95, 38,639.82 and 12,255.54

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Solution

The fourth proportional to 25,765.95, 38,639.82 and 12,255.54 is: 18,378.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,765.95 : 38,639.82 = 12,255.54 : x
  2. Step 2: Convert to fraction form
    25,765.95/38,639.82 = 12,255.54/x
  3. Step 3: Cross multiply
    25,765.95x = 38,639.82 × 12,255.54
  4. Step 4: Simplify right side
    25,765.95x = 473,551,760.66
  5. Step 5: Solve for x
    x = 473,551,760.66/25,765.95
  6. Step 6: Final answer
    x = 18,378.97

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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.