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Finding the Fourth Proportional to 25,672.68, 38,509.02 and 8,143.88

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Solution

The fourth proportional to 25,672.68, 38,509.02 and 8,143.88 is: 12,215.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,672.68 : 38,509.02 = 8,143.88 : x
  2. Step 2: Convert to fraction form
    25,672.68/38,509.02 = 8,143.88/x
  3. Step 3: Cross multiply
    25,672.68x = 38,509.02 × 8,143.88
  4. Step 4: Simplify right side
    25,672.68x = 313,612,645.25
  5. Step 5: Solve for x
    x = 313,612,645.25/25,672.68
  6. Step 6: Final answer
    x = 12,215.81

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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.