Home / 21,101.82-31,658.88-6,311.89

Finding the Fourth Proportional to 21,101.82, 31,658.88 and 6,311.89

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Solution

The fourth proportional to 21,101.82, 31,658.88 and 6,311.89 is: 9,469.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.82 : 31,658.88 = 6,311.89 : x
  2. Step 2: Convert to fraction form
    21,101.82/31,658.88 = 6,311.89/x
  3. Step 3: Cross multiply
    21,101.82x = 31,658.88 × 6,311.89
  4. Step 4: Simplify right side
    21,101.82x = 199,827,244.51
  5. Step 5: Solve for x
    x = 199,827,244.51/21,101.82
  6. Step 6: Final answer
    x = 9,469.67

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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.