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Finding the Fourth Proportional to 16,361.28, 22,578.24 and 8,909.12

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Solution

The fourth proportional to 16,361.28, 22,578.24 and 8,909.12 is: 12,294.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,361.28 : 22,578.24 = 8,909.12 : x
  2. Step 2: Convert to fraction form
    16,361.28/22,578.24 = 8,909.12/x
  3. Step 3: Cross multiply
    16,361.28x = 22,578.24 × 8,909.12
  4. Step 4: Simplify right side
    16,361.28x = 201,152,249.55
  5. Step 5: Solve for x
    x = 201,152,249.55/16,361.28
  6. Step 6: Final answer
    x = 12,294.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.