Home / 15,645.76-23,469.31-5,115.72

Finding the Fourth Proportional to 15,645.76, 23,469.31 and 5,115.72

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Solution

The fourth proportional to 15,645.76, 23,469.31 and 5,115.72 is: 7,673.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.76 : 23,469.31 = 5,115.72 : x
  2. Step 2: Convert to fraction form
    15,645.76/23,469.31 = 5,115.72/x
  3. Step 3: Cross multiply
    15,645.76x = 23,469.31 × 5,115.72
  4. Step 4: Simplify right side
    15,645.76x = 120,062,512.96
  5. Step 5: Solve for x
    x = 120,062,512.96/15,645.76
  6. Step 6: Final answer
    x = 7,673.81

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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.