Home / 38,433.06-57,642.30-12,135.60

Finding the Fourth Proportional to 38,433.06, 57,642.30 and 12,135.60

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Solution

The fourth proportional to 38,433.06, 57,642.30 and 12,135.60 is: 18,201.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,433.06 : 57,642.30 = 12,135.60 : x
  2. Step 2: Convert to fraction form
    38,433.06/57,642.30 = 12,135.60/x
  3. Step 3: Cross multiply
    38,433.06x = 57,642.30 × 12,135.60
  4. Step 4: Simplify right side
    38,433.06x = 699,523,895.88
  5. Step 5: Solve for x
    x = 699,523,895.88/38,433.06
  6. Step 6: Final answer
    x = 18,201.10

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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.