Home / 21,267.16-31,901.94-8,120.58

Finding the Fourth Proportional to 21,267.16, 31,901.94 and 8,120.58

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Solution

The fourth proportional to 21,267.16, 31,901.94 and 8,120.58 is: 12,181.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,267.16 : 31,901.94 = 8,120.58 : x
  2. Step 2: Convert to fraction form
    21,267.16/31,901.94 = 8,120.58/x
  3. Step 3: Cross multiply
    21,267.16x = 31,901.94 × 8,120.58
  4. Step 4: Simplify right side
    21,267.16x = 259,062,255.93
  5. Step 5: Solve for x
    x = 259,062,255.93/21,267.16
  6. Step 6: Final answer
    x = 12,181.33

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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.