Home / 21,118.66-31,675.11-5,534.98

Finding the Fourth Proportional to 21,118.66, 31,675.11 and 5,534.98

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Solution

The fourth proportional to 21,118.66, 31,675.11 and 5,534.98 is: 8,301.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,118.66 : 31,675.11 = 5,534.98 : x
  2. Step 2: Convert to fraction form
    21,118.66/31,675.11 = 5,534.98/x
  3. Step 3: Cross multiply
    21,118.66x = 31,675.11 × 5,534.98
  4. Step 4: Simplify right side
    21,118.66x = 175,321,100.35
  5. Step 5: Solve for x
    x = 175,321,100.35/21,118.66
  6. Step 6: Final answer
    x = 8,301.72

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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.