Home / 12,445.28-18,667.99-3,680.27

Finding the Fourth Proportional to 12,445.28, 18,667.99 and 3,680.27

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Solution

The fourth proportional to 12,445.28, 18,667.99 and 3,680.27 is: 5,520.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.28 : 18,667.99 = 3,680.27 : x
  2. Step 2: Convert to fraction form
    12,445.28/18,667.99 = 3,680.27/x
  3. Step 3: Cross multiply
    12,445.28x = 18,667.99 × 3,680.27
  4. Step 4: Simplify right side
    12,445.28x = 68,703,204.12
  5. Step 5: Solve for x
    x = 68,703,204.12/12,445.28
  6. Step 6: Final answer
    x = 5,520.42

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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.