Home / 13,723.48-20,556.06-7,865.56

Finding the Fourth Proportional to 13,723.48, 20,556.06 and 7,865.56

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Solution

The fourth proportional to 13,723.48, 20,556.06 and 7,865.56 is: 11,781.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.48 : 20,556.06 = 7,865.56 : x
  2. Step 2: Convert to fraction form
    13,723.48/20,556.06 = 7,865.56/x
  3. Step 3: Cross multiply
    13,723.48x = 20,556.06 × 7,865.56
  4. Step 4: Simplify right side
    13,723.48x = 161,684,923.29
  5. Step 5: Solve for x
    x = 161,684,923.29/13,723.48
  6. Step 6: Final answer
    x = 11,781.63

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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.