Home / 20,335.88-30,368.49-20,115.97

Finding the Fourth Proportional to 20,335.88, 30,368.49 and 20,115.97

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Solution

The fourth proportional to 20,335.88, 30,368.49 and 20,115.97 is: 30,040.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.88 : 30,368.49 = 20,115.97 : x
  2. Step 2: Convert to fraction form
    20,335.88/30,368.49 = 20,115.97/x
  3. Step 3: Cross multiply
    20,335.88x = 30,368.49 × 20,115.97
  4. Step 4: Simplify right side
    20,335.88x = 610,891,633.79
  5. Step 5: Solve for x
    x = 610,891,633.79/20,335.88
  6. Step 6: Final answer
    x = 30,040.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.