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Finding the Fourth Proportional to 25,993.59, 38,995.65 and 8,458.71

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Solution

The fourth proportional to 25,993.59, 38,995.65 and 8,458.71 is: 12,689.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,993.59 : 38,995.65 = 8,458.71 : x
  2. Step 2: Convert to fraction form
    25,993.59/38,995.65 = 8,458.71/x
  3. Step 3: Cross multiply
    25,993.59x = 38,995.65 × 8,458.71
  4. Step 4: Simplify right side
    25,993.59x = 329,852,894.61
  5. Step 5: Solve for x
    x = 329,852,894.61/25,993.59
  6. Step 6: Final answer
    x = 12,689.78

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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.