Home / 10,255.72-15,393.21-5,328.85

Finding the Fourth Proportional to 10,255.72, 15,393.21 and 5,328.85

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Solution

The fourth proportional to 10,255.72, 15,393.21 and 5,328.85 is: 7,998.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,255.72 : 15,393.21 = 5,328.85 : x
  2. Step 2: Convert to fraction form
    10,255.72/15,393.21 = 5,328.85/x
  3. Step 3: Cross multiply
    10,255.72x = 15,393.21 × 5,328.85
  4. Step 4: Simplify right side
    10,255.72x = 82,028,107.11
  5. Step 5: Solve for x
    x = 82,028,107.11/10,255.72
  6. Step 6: Final answer
    x = 7,998.28

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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.