Home / 20,864.94-28,793.66-12,371.22

Finding the Fourth Proportional to 20,864.94, 28,793.66 and 12,371.22

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Solution

The fourth proportional to 20,864.94, 28,793.66 and 12,371.22 is: 17,072.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.94 : 28,793.66 = 12,371.22 : x
  2. Step 2: Convert to fraction form
    20,864.94/28,793.66 = 12,371.22/x
  3. Step 3: Cross multiply
    20,864.94x = 28,793.66 × 12,371.22
  4. Step 4: Simplify right side
    20,864.94x = 356,212,640.61
  5. Step 5: Solve for x
    x = 356,212,640.61/20,864.94
  6. Step 6: Final answer
    x = 17,072.31

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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.