Home / 27,778.40-38,324.66-15,833.12

Finding the Fourth Proportional to 27,778.40, 38,324.66 and 15,833.12

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Solution

The fourth proportional to 27,778.40, 38,324.66 and 15,833.12 is: 21,844.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,778.40 : 38,324.66 = 15,833.12 : x
  2. Step 2: Convert to fraction form
    27,778.40/38,324.66 = 15,833.12/x
  3. Step 3: Cross multiply
    27,778.40x = 38,324.66 × 15,833.12
  4. Step 4: Simplify right side
    27,778.40x = 606,798,940.74
  5. Step 5: Solve for x
    x = 606,798,940.74/27,778.40
  6. Step 6: Final answer
    x = 21,844.27

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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.