Home / 27,929.60-41,870.79-12,122.75

Finding the Fourth Proportional to 27,929.60, 41,870.79 and 12,122.75

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Solution

The fourth proportional to 27,929.60, 41,870.79 and 12,122.75 is: 18,173.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,929.60 : 41,870.79 = 12,122.75 : x
  2. Step 2: Convert to fraction form
    27,929.60/41,870.79 = 12,122.75/x
  3. Step 3: Cross multiply
    27,929.60x = 41,870.79 × 12,122.75
  4. Step 4: Simplify right side
    27,929.60x = 507,589,257.20
  5. Step 5: Solve for x
    x = 507,589,257.20/27,929.60
  6. Step 6: Final answer
    x = 18,173.88

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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.