Home / 13,631.38-20,441.70-5,310.28

Finding the Fourth Proportional to 13,631.38, 20,441.70 and 5,310.28

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Solution

The fourth proportional to 13,631.38, 20,441.70 and 5,310.28 is: 7,963.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.38 : 20,441.70 = 5,310.28 : x
  2. Step 2: Convert to fraction form
    13,631.38/20,441.70 = 5,310.28/x
  3. Step 3: Cross multiply
    13,631.38x = 20,441.70 × 5,310.28
  4. Step 4: Simplify right side
    13,631.38x = 108,551,150.68
  5. Step 5: Solve for x
    x = 108,551,150.68/13,631.38
  6. Step 6: Final answer
    x = 7,963.33

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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.