Home / 20,239.75-27,934.50-11,856.25

Finding the Fourth Proportional to 20,239.75, 27,934.50 and 11,856.25

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Solution

The fourth proportional to 20,239.75, 27,934.50 and 11,856.25 is: 16,363.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.75 : 27,934.50 = 11,856.25 : x
  2. Step 2: Convert to fraction form
    20,239.75/27,934.50 = 11,856.25/x
  3. Step 3: Cross multiply
    20,239.75x = 27,934.50 × 11,856.25
  4. Step 4: Simplify right side
    20,239.75x = 331,198,415.63
  5. Step 5: Solve for x
    x = 331,198,415.63/20,239.75
  6. Step 6: Final answer
    x = 16,363.76

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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.