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Finding the Fourth Proportional to 21,757.34, 32,636.46 and 6,966.21

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Solution

The fourth proportional to 21,757.34, 32,636.46 and 6,966.21 is: 10,449.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,757.34 : 32,636.46 = 6,966.21 : x
  2. Step 2: Convert to fraction form
    21,757.34/32,636.46 = 6,966.21/x
  3. Step 3: Cross multiply
    21,757.34x = 32,636.46 × 6,966.21
  4. Step 4: Simplify right side
    21,757.34x = 227,352,582.53
  5. Step 5: Solve for x
    x = 227,352,582.53/21,757.34
  6. Step 6: Final answer
    x = 10,449.47

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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.