Home / 11,399.38-15,731.22-6,683.70

Finding the Fourth Proportional to 11,399.38, 15,731.22 and 6,683.70

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Solution

The fourth proportional to 11,399.38, 15,731.22 and 6,683.70 is: 9,223.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,399.38 : 15,731.22 = 6,683.70 : x
  2. Step 2: Convert to fraction form
    11,399.38/15,731.22 = 6,683.70/x
  3. Step 3: Cross multiply
    11,399.38x = 15,731.22 × 6,683.70
  4. Step 4: Simplify right side
    11,399.38x = 105,142,755.11
  5. Step 5: Solve for x
    x = 105,142,755.11/11,399.38
  6. Step 6: Final answer
    x = 9,223.55

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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.