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Finding the Fourth Proportional to 16,401.88, 24,609.40 and 8,081.70

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Solution

The fourth proportional to 16,401.88, 24,609.40 and 8,081.70 is: 12,125.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,401.88 : 24,609.40 = 8,081.70 : x
  2. Step 2: Convert to fraction form
    16,401.88/24,609.40 = 8,081.70/x
  3. Step 3: Cross multiply
    16,401.88x = 24,609.40 × 8,081.70
  4. Step 4: Simplify right side
    16,401.88x = 198,885,787.98
  5. Step 5: Solve for x
    x = 198,885,787.98/16,401.88
  6. Step 6: Final answer
    x = 12,125.79

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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.