Home / 19,731.12-27,229.78-11,347.62

Finding the Fourth Proportional to 19,731.12, 27,229.78 and 11,347.62

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Solution

The fourth proportional to 19,731.12, 27,229.78 and 11,347.62 is: 15,660.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,731.12 : 27,229.78 = 11,347.62 : x
  2. Step 2: Convert to fraction form
    19,731.12/27,229.78 = 11,347.62/x
  3. Step 3: Cross multiply
    19,731.12x = 27,229.78 × 11,347.62
  4. Step 4: Simplify right side
    19,731.12x = 308,993,196.12
  5. Step 5: Solve for x
    x = 308,993,196.12/19,731.12
  6. Step 6: Final answer
    x = 15,660.20

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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.