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Finding the Fourth Proportional to 21,992.72, 32,988.60 and 5,352.84

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Solution

The fourth proportional to 21,992.72, 32,988.60 and 5,352.84 is: 8,029.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,992.72 : 32,988.60 = 5,352.84 : x
  2. Step 2: Convert to fraction form
    21,992.72/32,988.60 = 5,352.84/x
  3. Step 3: Cross multiply
    21,992.72x = 32,988.60 × 5,352.84
  4. Step 4: Simplify right side
    21,992.72x = 176,582,697.62
  5. Step 5: Solve for x
    x = 176,582,697.62/21,992.72
  6. Step 6: Final answer
    x = 8,029.14

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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.