Home / 21,979.12-32,971.92-6,394.72

Finding the Fourth Proportional to 21,979.12, 32,971.92 and 6,394.72

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Solution

The fourth proportional to 21,979.12, 32,971.92 and 6,394.72 is: 9,593.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.12 : 32,971.92 = 6,394.72 : x
  2. Step 2: Convert to fraction form
    21,979.12/32,971.92 = 6,394.72/x
  3. Step 3: Cross multiply
    21,979.12x = 32,971.92 × 6,394.72
  4. Step 4: Simplify right side
    21,979.12x = 210,846,196.26
  5. Step 5: Solve for x
    x = 210,846,196.26/21,979.12
  6. Step 6: Final answer
    x = 9,593.02

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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.