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Finding the Fourth Proportional to 16,438.62, 22,685.49 and 8,986.62

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Solution

The fourth proportional to 16,438.62, 22,685.49 and 8,986.62 is: 12,401.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,438.62 : 22,685.49 = 8,986.62 : x
  2. Step 2: Convert to fraction form
    16,438.62/22,685.49 = 8,986.62/x
  3. Step 3: Cross multiply
    16,438.62x = 22,685.49 × 8,986.62
  4. Step 4: Simplify right side
    16,438.62x = 203,865,878.14
  5. Step 5: Solve for x
    x = 203,865,878.14/16,438.62
  6. Step 6: Final answer
    x = 12,401.64

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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.