Home / 13,515.28-20,273.28-5,722.72

Finding the Fourth Proportional to 13,515.28, 20,273.28 and 5,722.72

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Solution

The fourth proportional to 13,515.28, 20,273.28 and 5,722.72 is: 8,584.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.28 : 20,273.28 = 5,722.72 : x
  2. Step 2: Convert to fraction form
    13,515.28/20,273.28 = 5,722.72/x
  3. Step 3: Cross multiply
    13,515.28x = 20,273.28 × 5,722.72
  4. Step 4: Simplify right side
    13,515.28x = 116,018,304.92
  5. Step 5: Solve for x
    x = 116,018,304.92/13,515.28
  6. Step 6: Final answer
    x = 8,584.23

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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.