Home / 11,520.80-17,279.16-4,125.32

Finding the Fourth Proportional to 11,520.80, 17,279.16 and 4,125.32

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Solution

The fourth proportional to 11,520.80, 17,279.16 and 4,125.32 is: 6,187.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,520.80 : 17,279.16 = 4,125.32 : x
  2. Step 2: Convert to fraction form
    11,520.80/17,279.16 = 4,125.32/x
  3. Step 3: Cross multiply
    11,520.80x = 17,279.16 × 4,125.32
  4. Step 4: Simplify right side
    11,520.80x = 71,282,064.33
  5. Step 5: Solve for x
    x = 71,282,064.33/11,520.80
  6. Step 6: Final answer
    x = 6,187.25

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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.