Home / 13,168.28-18,169.72-7,791.56

Finding the Fourth Proportional to 13,168.28, 18,169.72 and 7,791.56

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Solution

The fourth proportional to 13,168.28, 18,169.72 and 7,791.56 is: 10,750.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,168.28 : 18,169.72 = 7,791.56 : x
  2. Step 2: Convert to fraction form
    13,168.28/18,169.72 = 7,791.56/x
  3. Step 3: Cross multiply
    13,168.28x = 18,169.72 × 7,791.56
  4. Step 4: Simplify right side
    13,168.28x = 141,570,463.56
  5. Step 5: Solve for x
    x = 141,570,463.56/13,168.28
  6. Step 6: Final answer
    x = 10,750.87

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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.