Home / 12,159.75-18,221.38-9,382.26

Finding the Fourth Proportional to 12,159.75, 18,221.38 and 9,382.26

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Solution

The fourth proportional to 12,159.75, 18,221.38 and 9,382.26 is: 14,059.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.75 : 18,221.38 = 9,382.26 : x
  2. Step 2: Convert to fraction form
    12,159.75/18,221.38 = 9,382.26/x
  3. Step 3: Cross multiply
    12,159.75x = 18,221.38 × 9,382.26
  4. Step 4: Simplify right side
    12,159.75x = 170,957,724.72
  5. Step 5: Solve for x
    x = 170,957,724.72/12,159.75
  6. Step 6: Final answer
    x = 14,059.31

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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.