Home / 22,135.74-30,517.47-21,447.78

Finding the Fourth Proportional to 22,135.74, 30,517.47 and 21,447.78

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Solution

The fourth proportional to 22,135.74, 30,517.47 and 21,447.78 is: 29,569.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,135.74 : 30,517.47 = 21,447.78 : x
  2. Step 2: Convert to fraction form
    22,135.74/30,517.47 = 21,447.78/x
  3. Step 3: Cross multiply
    22,135.74x = 30,517.47 × 21,447.78
  4. Step 4: Simplify right side
    22,135.74x = 654,531,982.72
  5. Step 5: Solve for x
    x = 654,531,982.72/22,135.74
  6. Step 6: Final answer
    x = 29,569.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.