Home / 31,338.72-43,245.28-17,191.20

Finding the Fourth Proportional to 31,338.72, 43,245.28 and 17,191.20

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Solution

The fourth proportional to 31,338.72, 43,245.28 and 17,191.20 is: 23,722.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,338.72 : 43,245.28 = 17,191.20 : x
  2. Step 2: Convert to fraction form
    31,338.72/43,245.28 = 17,191.20/x
  3. Step 3: Cross multiply
    31,338.72x = 43,245.28 × 17,191.20
  4. Step 4: Simplify right side
    31,338.72x = 743,438,257.54
  5. Step 5: Solve for x
    x = 743,438,257.54/31,338.72
  6. Step 6: Final answer
    x = 23,722.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.