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Finding the Fourth Proportional to 16,438.88, 22,685.66 and 8,986.88

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Solution

The fourth proportional to 16,438.88, 22,685.66 and 8,986.88 is: 12,401.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,438.88 : 22,685.66 = 8,986.88 : x
  2. Step 2: Convert to fraction form
    16,438.88/22,685.66 = 8,986.88/x
  3. Step 3: Cross multiply
    16,438.88x = 22,685.66 × 8,986.88
  4. Step 4: Simplify right side
    16,438.88x = 203,873,304.14
  5. Step 5: Solve for x
    x = 203,873,304.14/16,438.88
  6. Step 6: Final answer
    x = 12,401.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.