Home / 12,743.12-17,580.20-9,198.48

Finding the Fourth Proportional to 12,743.12, 17,580.20 and 9,198.48

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Solution

The fourth proportional to 12,743.12, 17,580.20 and 9,198.48 is: 12,690.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,743.12 : 17,580.20 = 9,198.48 : x
  2. Step 2: Convert to fraction form
    12,743.12/17,580.20 = 9,198.48/x
  3. Step 3: Cross multiply
    12,743.12x = 17,580.20 × 9,198.48
  4. Step 4: Simplify right side
    12,743.12x = 161,711,118.10
  5. Step 5: Solve for x
    x = 161,711,118.10/12,743.12
  6. Step 6: Final answer
    x = 12,690.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.