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Finding the Fourth Proportional to 21,651.50, 32,477.28 and 5,235.50

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Solution

The fourth proportional to 21,651.50, 32,477.28 and 5,235.50 is: 7,853.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,651.50 : 32,477.28 = 5,235.50 : x
  2. Step 2: Convert to fraction form
    21,651.50/32,477.28 = 5,235.50/x
  3. Step 3: Cross multiply
    21,651.50x = 32,477.28 × 5,235.50
  4. Step 4: Simplify right side
    21,651.50x = 170,034,799.44
  5. Step 5: Solve for x
    x = 170,034,799.44/21,651.50
  6. Step 6: Final answer
    x = 7,853.26

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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.