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Finding the Fourth Proportional to 21,992.76, 32,988.66 and 5,352.87

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Solution

The fourth proportional to 21,992.76, 32,988.66 and 5,352.87 is: 8,029.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,992.76 : 32,988.66 = 5,352.87 : x
  2. Step 2: Convert to fraction form
    21,992.76/32,988.66 = 5,352.87/x
  3. Step 3: Cross multiply
    21,992.76x = 32,988.66 × 5,352.87
  4. Step 4: Simplify right side
    21,992.76x = 176,584,008.45
  5. Step 5: Solve for x
    x = 176,584,008.45/21,992.76
  6. Step 6: Final answer
    x = 8,029.19

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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.