Home / 25,991.62-38,989.86-8,456.74

Finding the Fourth Proportional to 25,991.62, 38,989.86 and 8,456.74

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Solution

The fourth proportional to 25,991.62, 38,989.86 and 8,456.74 is: 12,685.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,991.62 : 38,989.86 = 8,456.74 : x
  2. Step 2: Convert to fraction form
    25,991.62/38,989.86 = 8,456.74/x
  3. Step 3: Cross multiply
    25,991.62x = 38,989.86 × 8,456.74
  4. Step 4: Simplify right side
    25,991.62x = 329,727,108.66
  5. Step 5: Solve for x
    x = 329,727,108.66/25,991.62
  6. Step 6: Final answer
    x = 12,685.90

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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.