Home / 19,822.20-29,660.13-11,929.56

Finding the Fourth Proportional to 19,822.20, 29,660.13 and 11,929.56

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Solution

The fourth proportional to 19,822.20, 29,660.13 and 11,929.56 is: 17,850.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,822.20 : 29,660.13 = 11,929.56 : x
  2. Step 2: Convert to fraction form
    19,822.20/29,660.13 = 11,929.56/x
  3. Step 3: Cross multiply
    19,822.20x = 29,660.13 × 11,929.56
  4. Step 4: Simplify right side
    19,822.20x = 353,832,300.44
  5. Step 5: Solve for x
    x = 353,832,300.44/19,822.20
  6. Step 6: Final answer
    x = 17,850.30

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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.