Home / 27,919.76-38,529.30-15,344.50

Finding the Fourth Proportional to 27,919.76, 38,529.30 and 15,344.50

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Solution

The fourth proportional to 27,919.76, 38,529.30 and 15,344.50 is: 21,175.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,919.76 : 38,529.30 = 15,344.50 : x
  2. Step 2: Convert to fraction form
    27,919.76/38,529.30 = 15,344.50/x
  3. Step 3: Cross multiply
    27,919.76x = 38,529.30 × 15,344.50
  4. Step 4: Simplify right side
    27,919.76x = 591,212,843.85
  5. Step 5: Solve for x
    x = 591,212,843.85/27,919.76
  6. Step 6: Final answer
    x = 21,175.43

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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.