Home / 13,375.79-20,155.67-11,087.20

Finding the Fourth Proportional to 13,375.79, 20,155.67 and 11,087.20

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Solution

The fourth proportional to 13,375.79, 20,155.67 and 11,087.20 is: 16,707.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,375.79 : 20,155.67 = 11,087.20 : x
  2. Step 2: Convert to fraction form
    13,375.79/20,155.67 = 11,087.20/x
  3. Step 3: Cross multiply
    13,375.79x = 20,155.67 × 11,087.20
  4. Step 4: Simplify right side
    13,375.79x = 223,469,838.60
  5. Step 5: Solve for x
    x = 223,469,838.60/13,375.79
  6. Step 6: Final answer
    x = 16,707.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.