Home / 21,578.40-32,361.12-11,184.48

Finding the Fourth Proportional to 21,578.40, 32,361.12 and 11,184.48

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Solution

The fourth proportional to 21,578.40, 32,361.12 and 11,184.48 is: 16,773.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,578.40 : 32,361.12 = 11,184.48 : x
  2. Step 2: Convert to fraction form
    21,578.40/32,361.12 = 11,184.48/x
  3. Step 3: Cross multiply
    21,578.40x = 32,361.12 × 11,184.48
  4. Step 4: Simplify right side
    21,578.40x = 361,942,299.42
  5. Step 5: Solve for x
    x = 361,942,299.42/21,578.40
  6. Step 6: Final answer
    x = 16,773.36

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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.