Home / 28,856.27-39,838.22-21,996.44

Finding the Fourth Proportional to 28,856.27, 39,838.22 and 21,996.44

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Solution

The fourth proportional to 28,856.27, 39,838.22 and 21,996.44 is: 30,367.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,856.27 : 39,838.22 = 21,996.44 : x
  2. Step 2: Convert to fraction form
    28,856.27/39,838.22 = 21,996.44/x
  3. Step 3: Cross multiply
    28,856.27x = 39,838.22 × 21,996.44
  4. Step 4: Simplify right side
    28,856.27x = 876,299,015.94
  5. Step 5: Solve for x
    x = 876,299,015.94/28,856.27
  6. Step 6: Final answer
    x = 30,367.72

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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.