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Finding the Fourth Proportional to 12,149.73, 16,657.28 and 11,928.30

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Solution

The fourth proportional to 12,149.73, 16,657.28 and 11,928.30 is: 16,353.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,149.73 : 16,657.28 = 11,928.30 : x
  2. Step 2: Convert to fraction form
    12,149.73/16,657.28 = 11,928.30/x
  3. Step 3: Cross multiply
    12,149.73x = 16,657.28 × 11,928.30
  4. Step 4: Simplify right side
    12,149.73x = 198,692,955.65
  5. Step 5: Solve for x
    x = 198,692,955.65/12,149.73
  6. Step 6: Final answer
    x = 16,353.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.