Home / 21,962.85-30,308.78-11,891.41

Finding the Fourth Proportional to 21,962.85, 30,308.78 and 11,891.41

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Solution

The fourth proportional to 21,962.85, 30,308.78 and 11,891.41 is: 16,410.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,962.85 : 30,308.78 = 11,891.41 : x
  2. Step 2: Convert to fraction form
    21,962.85/30,308.78 = 11,891.41/x
  3. Step 3: Cross multiply
    21,962.85x = 30,308.78 × 11,891.41
  4. Step 4: Simplify right side
    21,962.85x = 360,414,083.54
  5. Step 5: Solve for x
    x = 360,414,083.54/21,962.85
  6. Step 6: Final answer
    x = 16,410.17

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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.