Home / 19,781.12-29,650.82-13,539.46

Finding the Fourth Proportional to 19,781.12, 29,650.82 and 13,539.46

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Solution

The fourth proportional to 19,781.12, 29,650.82 and 13,539.46 is: 20,294.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,781.12 : 29,650.82 = 13,539.46 : x
  2. Step 2: Convert to fraction form
    19,781.12/29,650.82 = 13,539.46/x
  3. Step 3: Cross multiply
    19,781.12x = 29,650.82 × 13,539.46
  4. Step 4: Simplify right side
    19,781.12x = 401,456,091.36
  5. Step 5: Solve for x
    x = 401,456,091.36/19,781.12
  6. Step 6: Final answer
    x = 20,294.91

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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.