Home / 10,133.28-13,986.56-7,149.92

Finding the Fourth Proportional to 10,133.28, 13,986.56 and 7,149.92

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Solution

The fourth proportional to 10,133.28, 13,986.56 and 7,149.92 is: 9,868.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,133.28 : 13,986.56 = 7,149.92 : x
  2. Step 2: Convert to fraction form
    10,133.28/13,986.56 = 7,149.92/x
  3. Step 3: Cross multiply
    10,133.28x = 13,986.56 × 7,149.92
  4. Step 4: Simplify right side
    10,133.28x = 100,002,785.08
  5. Step 5: Solve for x
    x = 100,002,785.08/10,133.28
  6. Step 6: Final answer
    x = 9,868.75

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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.