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Finding the Fourth Proportional to 12,614.70, 18,922.05 and 11,205.30

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Solution

The fourth proportional to 12,614.70, 18,922.05 and 11,205.30 is: 16,807.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,614.70 : 18,922.05 = 11,205.30 : x
  2. Step 2: Convert to fraction form
    12,614.70/18,922.05 = 11,205.30/x
  3. Step 3: Cross multiply
    12,614.70x = 18,922.05 × 11,205.30
  4. Step 4: Simplify right side
    12,614.70x = 212,027,246.87
  5. Step 5: Solve for x
    x = 212,027,246.87/12,614.70
  6. Step 6: Final answer
    x = 16,807.95

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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.