Home / 20,181.91-27,851.16-11,229.79

Finding the Fourth Proportional to 20,181.91, 27,851.16 and 11,229.79

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Solution

The fourth proportional to 20,181.91, 27,851.16 and 11,229.79 is: 15,497.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.91 : 27,851.16 = 11,229.79 : x
  2. Step 2: Convert to fraction form
    20,181.91/27,851.16 = 11,229.79/x
  3. Step 3: Cross multiply
    20,181.91x = 27,851.16 × 11,229.79
  4. Step 4: Simplify right side
    20,181.91x = 312,762,678.06
  5. Step 5: Solve for x
    x = 312,762,678.06/20,181.91
  6. Step 6: Final answer
    x = 15,497.18

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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.