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Finding the Fourth Proportional to 19,864.96, 29,801.34 and 6,721.12

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Solution

The fourth proportional to 19,864.96, 29,801.34 and 6,721.12 is: 10,083.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,864.96 : 29,801.34 = 6,721.12 : x
  2. Step 2: Convert to fraction form
    19,864.96/29,801.34 = 6,721.12/x
  3. Step 3: Cross multiply
    19,864.96x = 29,801.34 × 6,721.12
  4. Step 4: Simplify right side
    19,864.96x = 200,298,382.30
  5. Step 5: Solve for x
    x = 200,298,382.30/19,864.96
  6. Step 6: Final answer
    x = 10,083.00

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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.