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Finding the Fourth Proportional to 21,992.57, 32,988.39 and 5,352.69

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Solution

The fourth proportional to 21,992.57, 32,988.39 and 5,352.69 is: 8,028.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,992.57 : 32,988.39 = 5,352.69 : x
  2. Step 2: Convert to fraction form
    21,992.57/32,988.39 = 5,352.69/x
  3. Step 3: Cross multiply
    21,992.57x = 32,988.39 × 5,352.69
  4. Step 4: Simplify right side
    21,992.57x = 176,576,643.65
  5. Step 5: Solve for x
    x = 176,576,643.65/21,992.57
  6. Step 6: Final answer
    x = 8,028.92

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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.