Home / 16,965.12-25,440.84-5,115.23

Finding the Fourth Proportional to 16,965.12, 25,440.84 and 5,115.23

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Solution

The fourth proportional to 16,965.12, 25,440.84 and 5,115.23 is: 7,670.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,965.12 : 25,440.84 = 5,115.23 : x
  2. Step 2: Convert to fraction form
    16,965.12/25,440.84 = 5,115.23/x
  3. Step 3: Cross multiply
    16,965.12x = 25,440.84 × 5,115.23
  4. Step 4: Simplify right side
    16,965.12x = 130,135,620.79
  5. Step 5: Solve for x
    x = 130,135,620.79/16,965.12
  6. Step 6: Final answer
    x = 7,670.78

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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.