Home / 21,100.23-31,654.89-6,310.35

Finding the Fourth Proportional to 21,100.23, 31,654.89 and 6,310.35

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Solution

The fourth proportional to 21,100.23, 31,654.89 and 6,310.35 is: 9,466.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,100.23 : 31,654.89 = 6,310.35 : x
  2. Step 2: Convert to fraction form
    21,100.23/31,654.89 = 6,310.35/x
  3. Step 3: Cross multiply
    21,100.23x = 31,654.89 × 6,310.35
  4. Step 4: Simplify right side
    21,100.23x = 199,753,435.11
  5. Step 5: Solve for x
    x = 199,753,435.11/21,100.23
  6. Step 6: Final answer
    x = 9,466.88

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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.