Home / 21,921.48-30,244.50-13,414.73

Finding the Fourth Proportional to 21,921.48, 30,244.50 and 13,414.73

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Solution

The fourth proportional to 21,921.48, 30,244.50 and 13,414.73 is: 18,507.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,921.48 : 30,244.50 = 13,414.73 : x
  2. Step 2: Convert to fraction form
    21,921.48/30,244.50 = 13,414.73/x
  3. Step 3: Cross multiply
    21,921.48x = 30,244.50 × 13,414.73
  4. Step 4: Simplify right side
    21,921.48x = 405,721,650.26
  5. Step 5: Solve for x
    x = 405,721,650.26/21,921.48
  6. Step 6: Final answer
    x = 18,507.95

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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.