Home / 12,245.38-18,365.28-3,478.12

Finding the Fourth Proportional to 12,245.38, 18,365.28 and 3,478.12

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Solution

The fourth proportional to 12,245.38, 18,365.28 and 3,478.12 is: 5,216.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,245.38 : 18,365.28 = 3,478.12 : x
  2. Step 2: Convert to fraction form
    12,245.38/18,365.28 = 3,478.12/x
  3. Step 3: Cross multiply
    12,245.38x = 18,365.28 × 3,478.12
  4. Step 4: Simplify right side
    12,245.38x = 63,876,647.67
  5. Step 5: Solve for x
    x = 63,876,647.67/12,245.38
  6. Step 6: Final answer
    x = 5,216.39

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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.