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Finding the Fourth Proportional to 16,685.70, 24,967.80 and 12,311.70

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Solution

The fourth proportional to 16,685.70, 24,967.80 and 12,311.70 is: 18,422.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,685.70 : 24,967.80 = 12,311.70 : x
  2. Step 2: Convert to fraction form
    16,685.70/24,967.80 = 12,311.70/x
  3. Step 3: Cross multiply
    16,685.70x = 24,967.80 × 12,311.70
  4. Step 4: Simplify right side
    16,685.70x = 307,396,063.26
  5. Step 5: Solve for x
    x = 307,396,063.26/16,685.70
  6. Step 6: Final answer
    x = 18,422.73

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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.