Home / 12,439.46-18,656.49-3,672.38

Finding the Fourth Proportional to 12,439.46, 18,656.49 and 3,672.38

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Solution

The fourth proportional to 12,439.46, 18,656.49 and 3,672.38 is: 5,507.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.46 : 18,656.49 = 3,672.38 : x
  2. Step 2: Convert to fraction form
    12,439.46/18,656.49 = 3,672.38/x
  3. Step 3: Cross multiply
    12,439.46x = 18,656.49 × 3,672.38
  4. Step 4: Simplify right side
    12,439.46x = 68,513,720.75
  5. Step 5: Solve for x
    x = 68,513,720.75/12,439.46
  6. Step 6: Final answer
    x = 5,507.77

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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.