Home / 13,515.28-20,275.09-5,725.24

Finding the Fourth Proportional to 13,515.28, 20,275.09 and 5,725.24

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Solution

The fourth proportional to 13,515.28, 20,275.09 and 5,725.24 is: 8,588.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.28 : 20,275.09 = 5,725.24 : x
  2. Step 2: Convert to fraction form
    13,515.28/20,275.09 = 5,725.24/x
  3. Step 3: Cross multiply
    13,515.28x = 20,275.09 × 5,725.24
  4. Step 4: Simplify right side
    13,515.28x = 116,079,691.27
  5. Step 5: Solve for x
    x = 116,079,691.27/13,515.28
  6. Step 6: Final answer
    x = 8,588.78

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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.