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Finding the Fourth Proportional to 10,939.40, 16,496.03 and 9,729.80

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Solution

The fourth proportional to 10,939.40, 16,496.03 and 9,729.80 is: 14,672.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.40 : 16,496.03 = 9,729.80 : x
  2. Step 2: Convert to fraction form
    10,939.40/16,496.03 = 9,729.80/x
  3. Step 3: Cross multiply
    10,939.40x = 16,496.03 × 9,729.80
  4. Step 4: Simplify right side
    10,939.40x = 160,503,072.69
  5. Step 5: Solve for x
    x = 160,503,072.69/10,939.40
  6. Step 6: Final answer
    x = 14,672.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.