Home / 20,215.44-30,351.12-13,960.80

Finding the Fourth Proportional to 20,215.44, 30,351.12 and 13,960.80

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Solution

The fourth proportional to 20,215.44, 30,351.12 and 13,960.80 is: 20,960.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.44 : 30,351.12 = 13,960.80 : x
  2. Step 2: Convert to fraction form
    20,215.44/30,351.12 = 13,960.80/x
  3. Step 3: Cross multiply
    20,215.44x = 30,351.12 × 13,960.80
  4. Step 4: Simplify right side
    20,215.44x = 423,725,916.10
  5. Step 5: Solve for x
    x = 423,725,916.10/20,215.44
  6. Step 6: Final answer
    x = 20,960.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.