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Finding the Fourth Proportional to 21,985.27, 32,980.11 and 6,190.27

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Solution

The fourth proportional to 21,985.27, 32,980.11 and 6,190.27 is: 9,286.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.27 : 32,980.11 = 6,190.27 : x
  2. Step 2: Convert to fraction form
    21,985.27/32,980.11 = 6,190.27/x
  3. Step 3: Cross multiply
    21,985.27x = 32,980.11 × 6,190.27
  4. Step 4: Simplify right side
    21,985.27x = 204,155,900.20
  5. Step 5: Solve for x
    x = 204,155,900.20/21,985.27
  6. Step 6: Final answer
    x = 9,286.03

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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.