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Finding the Fourth Proportional to 11,939.03, 16,471.38 and 7,399.63

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Solution

The fourth proportional to 11,939.03, 16,471.38 and 7,399.63 is: 10,208.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.03 : 16,471.38 = 7,399.63 : x
  2. Step 2: Convert to fraction form
    11,939.03/16,471.38 = 7,399.63/x
  3. Step 3: Cross multiply
    11,939.03x = 16,471.38 × 7,399.63
  4. Step 4: Simplify right side
    11,939.03x = 121,882,138.18
  5. Step 5: Solve for x
    x = 121,882,138.18/11,939.03
  6. Step 6: Final answer
    x = 10,208.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.