Home / 11,520.15-17,255.92-5,285.37

Finding the Fourth Proportional to 11,520.15, 17,255.92 and 5,285.37

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Solution

The fourth proportional to 11,520.15, 17,255.92 and 5,285.37 is: 7,916.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,520.15 : 17,255.92 = 5,285.37 : x
  2. Step 2: Convert to fraction form
    11,520.15/17,255.92 = 5,285.37/x
  3. Step 3: Cross multiply
    11,520.15x = 17,255.92 × 5,285.37
  4. Step 4: Simplify right side
    11,520.15x = 91,203,921.89
  5. Step 5: Solve for x
    x = 91,203,921.89/11,520.15
  6. Step 6: Final answer
    x = 7,916.90

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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.