Home / 12,123.54-18,181.44-4,726.20

Finding the Fourth Proportional to 12,123.54, 18,181.44 and 4,726.20

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Solution

The fourth proportional to 12,123.54, 18,181.44 and 4,726.20 is: 7,087.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.54 : 18,181.44 = 4,726.20 : x
  2. Step 2: Convert to fraction form
    12,123.54/18,181.44 = 4,726.20/x
  3. Step 3: Cross multiply
    12,123.54x = 18,181.44 × 4,726.20
  4. Step 4: Simplify right side
    12,123.54x = 85,929,121.73
  5. Step 5: Solve for x
    x = 85,929,121.73/12,123.54
  6. Step 6: Final answer
    x = 7,087.79

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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.