Home / 27,825.40-38,401.12-17,221.20

Finding the Fourth Proportional to 27,825.40, 38,401.12 and 17,221.20

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Solution

The fourth proportional to 27,825.40, 38,401.12 and 17,221.20 is: 23,766.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,825.40 : 38,401.12 = 17,221.20 : x
  2. Step 2: Convert to fraction form
    27,825.40/38,401.12 = 17,221.20/x
  3. Step 3: Cross multiply
    27,825.40x = 38,401.12 × 17,221.20
  4. Step 4: Simplify right side
    27,825.40x = 661,313,367.74
  5. Step 5: Solve for x
    x = 661,313,367.74/27,825.40
  6. Step 6: Final answer
    x = 23,766.54

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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.