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Finding the Fourth Proportional to 21,687.84, 32,532 and 7,645.26

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Solution

The fourth proportional to 21,687.84, 32,532 and 7,645.26 is: 11,467.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,687.84 : 32,532 = 7,645.26 : x
  2. Step 2: Convert to fraction form
    21,687.84/32,532 = 7,645.26/x
  3. Step 3: Cross multiply
    21,687.84x = 32,532 × 7,645.26
  4. Step 4: Simplify right side
    21,687.84x = 248,715,598.32
  5. Step 5: Solve for x
    x = 248,715,598.32/21,687.84
  6. Step 6: Final answer
    x = 11,467.97

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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.