Home / 20,143.23-30,207.60-7,659.93

Finding the Fourth Proportional to 20,143.23, 30,207.60 and 7,659.93

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Solution

The fourth proportional to 20,143.23, 30,207.60 and 7,659.93 is: 11,487.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.23 : 30,207.60 = 7,659.93 : x
  2. Step 2: Convert to fraction form
    20,143.23/30,207.60 = 7,659.93/x
  3. Step 3: Cross multiply
    20,143.23x = 30,207.60 × 7,659.93
  4. Step 4: Simplify right side
    20,143.23x = 231,388,101.47
  5. Step 5: Solve for x
    x = 231,388,101.47/20,143.23
  6. Step 6: Final answer
    x = 11,487.14

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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.