Home / 20,090.97-30,119.43-12,283.38

Finding the Fourth Proportional to 20,090.97, 30,119.43 and 12,283.38

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Solution

The fourth proportional to 20,090.97, 30,119.43 and 12,283.38 is: 18,414.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.97 : 30,119.43 = 12,283.38 : x
  2. Step 2: Convert to fraction form
    20,090.97/30,119.43 = 12,283.38/x
  3. Step 3: Cross multiply
    20,090.97x = 30,119.43 × 12,283.38
  4. Step 4: Simplify right side
    20,090.97x = 369,968,253.48
  5. Step 5: Solve for x
    x = 369,968,253.48/20,090.97
  6. Step 6: Final answer
    x = 18,414.66

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1.5x scale

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.