Home / 13,517.91-20,271.42-5,615.04

Finding the Fourth Proportional to 13,517.91, 20,271.42 and 5,615.04

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Solution

The fourth proportional to 13,517.91, 20,271.42 and 5,615.04 is: 8,420.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,517.91 : 20,271.42 = 5,615.04 : x
  2. Step 2: Convert to fraction form
    13,517.91/20,271.42 = 5,615.04/x
  3. Step 3: Cross multiply
    13,517.91x = 20,271.42 × 5,615.04
  4. Step 4: Simplify right side
    13,517.91x = 113,824,834.16
  5. Step 5: Solve for x
    x = 113,824,834.16/13,517.91
  6. Step 6: Final answer
    x = 8,420.30

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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.