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Finding the Fourth Proportional to 12,672.14, 18,995.02 and 4,769.23

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Solution

The fourth proportional to 12,672.14, 18,995.02 and 4,769.23 is: 7,148.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.14 : 18,995.02 = 4,769.23 : x
  2. Step 2: Convert to fraction form
    12,672.14/18,995.02 = 4,769.23/x
  3. Step 3: Cross multiply
    12,672.14x = 18,995.02 × 4,769.23
  4. Step 4: Simplify right side
    12,672.14x = 90,591,524.26
  5. Step 5: Solve for x
    x = 90,591,524.26/12,672.14
  6. Step 6: Final answer
    x = 7,148.87

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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.