Home / 20,820.01-31,179.97-11,908.33

Finding the Fourth Proportional to 20,820.01, 31,179.97 and 11,908.33

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Solution

The fourth proportional to 20,820.01, 31,179.97 and 11,908.33 is: 17,833.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,820.01 : 31,179.97 = 11,908.33 : x
  2. Step 2: Convert to fraction form
    20,820.01/31,179.97 = 11,908.33/x
  3. Step 3: Cross multiply
    20,820.01x = 31,179.97 × 11,908.33
  4. Step 4: Simplify right side
    20,820.01x = 371,301,242.10
  5. Step 5: Solve for x
    x = 371,301,242.10/20,820.01
  6. Step 6: Final answer
    x = 17,833.87

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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.