Home / 11,989.31-17,967.51-7,609.84

Finding the Fourth Proportional to 11,989.31, 17,967.51 and 7,609.84

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Solution

The fourth proportional to 11,989.31, 17,967.51 and 7,609.84 is: 11,404.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,989.31 : 17,967.51 = 7,609.84 : x
  2. Step 2: Convert to fraction form
    11,989.31/17,967.51 = 7,609.84/x
  3. Step 3: Cross multiply
    11,989.31x = 17,967.51 × 7,609.84
  4. Step 4: Simplify right side
    11,989.31x = 136,729,831.38
  5. Step 5: Solve for x
    x = 136,729,831.38/11,989.31
  6. Step 6: Final answer
    x = 11,404.32

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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.