Home / 12,149.20-18,229.20-4,363.60

Finding the Fourth Proportional to 12,149.20, 18,229.20 and 4,363.60

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Solution

The fourth proportional to 12,149.20, 18,229.20 and 4,363.60 is: 6,547.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,149.20 : 18,229.20 = 4,363.60 : x
  2. Step 2: Convert to fraction form
    12,149.20/18,229.20 = 4,363.60/x
  3. Step 3: Cross multiply
    12,149.20x = 18,229.20 × 4,363.60
  4. Step 4: Simplify right side
    12,149.20x = 79,544,937.12
  5. Step 5: Solve for x
    x = 79,544,937.12/12,149.20
  6. Step 6: Final answer
    x = 6,547.34

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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.