Home / 21,254.42-31,867.22-11,900.88

Finding the Fourth Proportional to 21,254.42, 31,867.22 and 11,900.88

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Solution

The fourth proportional to 21,254.42, 31,867.22 and 11,900.88 is: 17,843.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.42 : 31,867.22 = 11,900.88 : x
  2. Step 2: Convert to fraction form
    21,254.42/31,867.22 = 11,900.88/x
  3. Step 3: Cross multiply
    21,254.42x = 31,867.22 × 11,900.88
  4. Step 4: Simplify right side
    21,254.42x = 379,247,990.91
  5. Step 5: Solve for x
    x = 379,247,990.91/21,254.42
  6. Step 6: Final answer
    x = 17,843.25

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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.