Home / 11,939.18-16,469.20-7,455.14

Finding the Fourth Proportional to 11,939.18, 16,469.20 and 7,455.14

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Solution

The fourth proportional to 11,939.18, 16,469.20 and 7,455.14 is: 10,283.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.18 : 16,469.20 = 7,455.14 : x
  2. Step 2: Convert to fraction form
    11,939.18/16,469.20 = 7,455.14/x
  3. Step 3: Cross multiply
    11,939.18x = 16,469.20 × 7,455.14
  4. Step 4: Simplify right side
    11,939.18x = 122,780,154.41
  5. Step 5: Solve for x
    x = 122,780,154.41/11,939.18
  6. Step 6: Final answer
    x = 10,283.81

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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.