Home / 27,911.32-38,517.36-15,335.80

Finding the Fourth Proportional to 27,911.32, 38,517.36 and 15,335.80

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Solution

The fourth proportional to 27,911.32, 38,517.36 and 15,335.80 is: 21,163.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,911.32 : 38,517.36 = 15,335.80 : x
  2. Step 2: Convert to fraction form
    27,911.32/38,517.36 = 15,335.80/x
  3. Step 3: Cross multiply
    27,911.32x = 38,517.36 × 15,335.80
  4. Step 4: Simplify right side
    27,911.32x = 590,694,529.49
  5. Step 5: Solve for x
    x = 590,694,529.49/27,911.32
  6. Step 6: Final answer
    x = 21,163.26

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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.