Home / 21,961.41-30,294.39-13,892.58

Finding the Fourth Proportional to 21,961.41, 30,294.39 and 13,892.58

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Solution

The fourth proportional to 21,961.41, 30,294.39 and 13,892.58 is: 19,163.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.41 : 30,294.39 = 13,892.58 : x
  2. Step 2: Convert to fraction form
    21,961.41/30,294.39 = 13,892.58/x
  3. Step 3: Cross multiply
    21,961.41x = 30,294.39 × 13,892.58
  4. Step 4: Simplify right side
    21,961.41x = 420,867,236.63
  5. Step 5: Solve for x
    x = 420,867,236.63/21,961.41
  6. Step 6: Final answer
    x = 19,163.94

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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.