Home / 21,949.48-30,229.50-18,964.36

Finding the Fourth Proportional to 21,949.48, 30,229.50 and 18,964.36

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Solution

The fourth proportional to 21,949.48, 30,229.50 and 18,964.36 is: 26,118.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,949.48 : 30,229.50 = 18,964.36 : x
  2. Step 2: Convert to fraction form
    21,949.48/30,229.50 = 18,964.36/x
  3. Step 3: Cross multiply
    21,949.48x = 30,229.50 × 18,964.36
  4. Step 4: Simplify right side
    21,949.48x = 573,283,120.62
  5. Step 5: Solve for x
    x = 573,283,120.62/21,949.48
  6. Step 6: Final answer
    x = 26,118.30

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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.