Home / 12,164.40-18,232.20-9,082.80

Finding the Fourth Proportional to 12,164.40, 18,232.20 and 9,082.80

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Solution

The fourth proportional to 12,164.40, 18,232.20 and 9,082.80 is: 13,613.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,164.40 : 18,232.20 = 9,082.80 : x
  2. Step 2: Convert to fraction form
    12,164.40/18,232.20 = 9,082.80/x
  3. Step 3: Cross multiply
    12,164.40x = 18,232.20 × 9,082.80
  4. Step 4: Simplify right side
    12,164.40x = 165,599,426.16
  5. Step 5: Solve for x
    x = 165,599,426.16/12,164.40
  6. Step 6: Final answer
    x = 13,613.45

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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.