Home / 13,551.57-20,329.92-4,191.21

Finding the Fourth Proportional to 13,551.57, 20,329.92 and 4,191.21

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Solution

The fourth proportional to 13,551.57, 20,329.92 and 4,191.21 is: 6,287.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,551.57 : 20,329.92 = 4,191.21 : x
  2. Step 2: Convert to fraction form
    13,551.57/20,329.92 = 4,191.21/x
  3. Step 3: Cross multiply
    13,551.57x = 20,329.92 × 4,191.21
  4. Step 4: Simplify right side
    13,551.57x = 85,206,964.00
  5. Step 5: Solve for x
    x = 85,206,964.00/13,551.57
  6. Step 6: Final answer
    x = 6,287.61

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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.