Home / 21,093.12-31,644.48-11,227.20

Finding the Fourth Proportional to 21,093.12, 31,644.48 and 11,227.20

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Solution

The fourth proportional to 21,093.12, 31,644.48 and 11,227.20 is: 16,843.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,093.12 : 31,644.48 = 11,227.20 : x
  2. Step 2: Convert to fraction form
    21,093.12/31,644.48 = 11,227.20/x
  3. Step 3: Cross multiply
    21,093.12x = 31,644.48 × 11,227.20
  4. Step 4: Simplify right side
    21,093.12x = 355,278,905.86
  5. Step 5: Solve for x
    x = 355,278,905.86/21,093.12
  6. Step 6: Final answer
    x = 16,843.35

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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.