Home / 12,426.28-18,635.70-3,659.08

Finding the Fourth Proportional to 12,426.28, 18,635.70 and 3,659.08

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Solution

The fourth proportional to 12,426.28, 18,635.70 and 3,659.08 is: 5,487.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,426.28 : 18,635.70 = 3,659.08 : x
  2. Step 2: Convert to fraction form
    12,426.28/18,635.70 = 3,659.08/x
  3. Step 3: Cross multiply
    12,426.28x = 18,635.70 × 3,659.08
  4. Step 4: Simplify right side
    12,426.28x = 68,189,517.16
  5. Step 5: Solve for x
    x = 68,189,517.16/12,426.28
  6. Step 6: Final answer
    x = 5,487.52

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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.