Home / 10,081.38-13,912.20-5,605.32

Finding the Fourth Proportional to 10,081.38, 13,912.20 and 5,605.32

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Solution

The fourth proportional to 10,081.38, 13,912.20 and 5,605.32 is: 7,735.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,081.38 : 13,912.20 = 5,605.32 : x
  2. Step 2: Convert to fraction form
    10,081.38/13,912.20 = 5,605.32/x
  3. Step 3: Cross multiply
    10,081.38x = 13,912.20 × 5,605.32
  4. Step 4: Simplify right side
    10,081.38x = 77,982,332.90
  5. Step 5: Solve for x
    x = 77,982,332.90/10,081.38
  6. Step 6: Final answer
    x = 7,735.28

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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.