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Finding the Fourth Proportional to 21,489.67, 32,220.21 and 10,963.51

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Solution

The fourth proportional to 21,489.67, 32,220.21 and 10,963.51 is: 16,437.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,489.67 : 32,220.21 = 10,963.51 : x
  2. Step 2: Convert to fraction form
    21,489.67/32,220.21 = 10,963.51/x
  3. Step 3: Cross multiply
    21,489.67x = 32,220.21 × 10,963.51
  4. Step 4: Simplify right side
    21,489.67x = 353,246,594.54
  5. Step 5: Solve for x
    x = 353,246,594.54/21,489.67
  6. Step 6: Final answer
    x = 16,437.97

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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.