Home / 19,724.10-27,221.82-13,023.78

Finding the Fourth Proportional to 19,724.10, 27,221.82 and 13,023.78

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Solution

The fourth proportional to 19,724.10, 27,221.82 and 13,023.78 is: 17,974.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,724.10 : 27,221.82 = 13,023.78 : x
  2. Step 2: Convert to fraction form
    19,724.10/27,221.82 = 13,023.78/x
  3. Step 3: Cross multiply
    19,724.10x = 27,221.82 × 13,023.78
  4. Step 4: Simplify right side
    19,724.10x = 354,530,994.88
  5. Step 5: Solve for x
    x = 354,530,994.88/19,724.10
  6. Step 6: Final answer
    x = 17,974.51

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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.