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Finding the Fourth Proportional to 21,361.68, 32,029.70 and 8,866.62

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Solution

The fourth proportional to 21,361.68, 32,029.70 and 8,866.62 is: 13,294.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,361.68 : 32,029.70 = 8,866.62 : x
  2. Step 2: Convert to fraction form
    21,361.68/32,029.70 = 8,866.62/x
  3. Step 3: Cross multiply
    21,361.68x = 32,029.70 × 8,866.62
  4. Step 4: Simplify right side
    21,361.68x = 283,995,134.28
  5. Step 5: Solve for x
    x = 283,995,134.28/21,361.68
  6. Step 6: Final answer
    x = 13,294.61

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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.