Home / 21,297.20-31,951.32-10,212.44

Finding the Fourth Proportional to 21,297.20, 31,951.32 and 10,212.44

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Solution

The fourth proportional to 21,297.20, 31,951.32 and 10,212.44 is: 15,321.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,297.20 : 31,951.32 = 10,212.44 : x
  2. Step 2: Convert to fraction form
    21,297.20/31,951.32 = 10,212.44/x
  3. Step 3: Cross multiply
    21,297.20x = 31,951.32 × 10,212.44
  4. Step 4: Simplify right side
    21,297.20x = 326,300,938.42
  5. Step 5: Solve for x
    x = 326,300,938.42/21,297.20
  6. Step 6: Final answer
    x = 15,321.31

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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.