Home / 22,821.20-34,231.80-19,905.20

Finding the Fourth Proportional to 22,821.20, 34,231.80 and 19,905.20

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Solution

The fourth proportional to 22,821.20, 34,231.80 and 19,905.20 is: 29,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,821.20 : 34,231.80 = 19,905.20 : x
  2. Step 2: Convert to fraction form
    22,821.20/34,231.80 = 19,905.20/x
  3. Step 3: Cross multiply
    22,821.20x = 34,231.80 × 19,905.20
  4. Step 4: Simplify right side
    22,821.20x = 681,390,825.36
  5. Step 5: Solve for x
    x = 681,390,825.36/22,821.20
  6. Step 6: Final answer
    x = 29,857.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.