Home / 13,492.90-20,236.96-7,939.75

Finding the Fourth Proportional to 13,492.90, 20,236.96 and 7,939.75

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Solution

The fourth proportional to 13,492.90, 20,236.96 and 7,939.75 is: 11,908.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,492.90 : 20,236.96 = 7,939.75 : x
  2. Step 2: Convert to fraction form
    13,492.90/20,236.96 = 7,939.75/x
  3. Step 3: Cross multiply
    13,492.90x = 20,236.96 × 7,939.75
  4. Step 4: Simplify right side
    13,492.90x = 160,676,365.85
  5. Step 5: Solve for x
    x = 160,676,365.85/13,492.90
  6. Step 6: Final answer
    x = 11,908.21

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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.