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Finding the Fourth Proportional to 21,691.31, 32,536.94 and 6,900.21

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Solution

The fourth proportional to 21,691.31, 32,536.94 and 6,900.21 is: 10,350.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,691.31 : 32,536.94 = 6,900.21 : x
  2. Step 2: Convert to fraction form
    21,691.31/32,536.94 = 6,900.21/x
  3. Step 3: Cross multiply
    21,691.31x = 32,536.94 × 6,900.21
  4. Step 4: Simplify right side
    21,691.31x = 224,511,684.26
  5. Step 5: Solve for x
    x = 224,511,684.26/21,691.31
  6. Step 6: Final answer
    x = 10,350.31

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1.5x scale

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.