Home / 13,912.38-20,849.70-7,663.08

Finding the Fourth Proportional to 13,912.38, 20,849.70 and 7,663.08

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Solution

The fourth proportional to 13,912.38, 20,849.70 and 7,663.08 is: 11,484.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.38 : 20,849.70 = 7,663.08 : x
  2. Step 2: Convert to fraction form
    13,912.38/20,849.70 = 7,663.08/x
  3. Step 3: Cross multiply
    13,912.38x = 20,849.70 × 7,663.08
  4. Step 4: Simplify right side
    13,912.38x = 159,772,919.08
  5. Step 5: Solve for x
    x = 159,772,919.08/13,912.38
  6. Step 6: Final answer
    x = 11,484.23

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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.