Home / 20,531.68-30,806.66-11,766.60

Finding the Fourth Proportional to 20,531.68, 30,806.66 and 11,766.60

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Solution

The fourth proportional to 20,531.68, 30,806.66 and 11,766.60 is: 17,655.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.68 : 30,806.66 = 11,766.60 : x
  2. Step 2: Convert to fraction form
    20,531.68/30,806.66 = 11,766.60/x
  3. Step 3: Cross multiply
    20,531.68x = 30,806.66 × 11,766.60
  4. Step 4: Simplify right side
    20,531.68x = 362,489,674.97
  5. Step 5: Solve for x
    x = 362,489,674.97/20,531.68
  6. Step 6: Final answer
    x = 17,655.14

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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.