Home / 13,515.38-20,272.86-4,155.52

Finding the Fourth Proportional to 13,515.38, 20,272.86 and 4,155.52

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Solution

The fourth proportional to 13,515.38, 20,272.86 and 4,155.52 is: 6,233.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.38 : 20,272.86 = 4,155.52 : x
  2. Step 2: Convert to fraction form
    13,515.38/20,272.86 = 4,155.52/x
  3. Step 3: Cross multiply
    13,515.38x = 20,272.86 × 4,155.52
  4. Step 4: Simplify right side
    13,515.38x = 84,244,275.19
  5. Step 5: Solve for x
    x = 84,244,275.19/13,515.38
  6. Step 6: Final answer
    x = 6,233.22

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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.