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Finding the Fourth Proportional to 15,167.21, 20,933.28 and 8,797.58

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Solution

The fourth proportional to 15,167.21, 20,933.28 and 8,797.58 is: 12,142.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,167.21 : 20,933.28 = 8,797.58 : x
  2. Step 2: Convert to fraction form
    15,167.21/20,933.28 = 8,797.58/x
  3. Step 3: Cross multiply
    15,167.21x = 20,933.28 × 8,797.58
  4. Step 4: Simplify right side
    15,167.21x = 184,162,100.80
  5. Step 5: Solve for x
    x = 184,162,100.80/15,167.21
  6. Step 6: Final answer
    x = 12,142.12

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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.