Home / 21,960.66-30,310.29-20,189.46

Finding the Fourth Proportional to 21,960.66, 30,310.29 and 20,189.46

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Solution

The fourth proportional to 21,960.66, 30,310.29 and 20,189.46 is: 27,865.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960.66 : 30,310.29 = 20,189.46 : x
  2. Step 2: Convert to fraction form
    21,960.66/30,310.29 = 20,189.46/x
  3. Step 3: Cross multiply
    21,960.66x = 30,310.29 × 20,189.46
  4. Step 4: Simplify right side
    21,960.66x = 611,948,387.54
  5. Step 5: Solve for x
    x = 611,948,387.54/21,960.66
  6. Step 6: Final answer
    x = 27,865.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.