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Finding the Fourth Proportional to 16,778.64, 25,166.52 and 7,891.88

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Solution

The fourth proportional to 16,778.64, 25,166.52 and 7,891.88 is: 11,837.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,778.64 : 25,166.52 = 7,891.88 : x
  2. Step 2: Convert to fraction form
    16,778.64/25,166.52 = 7,891.88/x
  3. Step 3: Cross multiply
    16,778.64x = 25,166.52 × 7,891.88
  4. Step 4: Simplify right side
    16,778.64x = 198,611,155.86
  5. Step 5: Solve for x
    x = 198,611,155.86/16,778.64
  6. Step 6: Final answer
    x = 11,837.14

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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.