Home / 20,961.24-31,326.42-19,747.50

Finding the Fourth Proportional to 20,961.24, 31,326.42 and 19,747.50

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Solution

The fourth proportional to 20,961.24, 31,326.42 and 19,747.50 is: 29,512.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.24 : 31,326.42 = 19,747.50 : x
  2. Step 2: Convert to fraction form
    20,961.24/31,326.42 = 19,747.50/x
  3. Step 3: Cross multiply
    20,961.24x = 31,326.42 × 19,747.50
  4. Step 4: Simplify right side
    20,961.24x = 618,618,478.95
  5. Step 5: Solve for x
    x = 618,618,478.95/20,961.24
  6. Step 6: Final answer
    x = 29,512.49

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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.