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Finding the Fourth Proportional to 15,135.85, 20,884.08 and 9,167.41

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Solution

The fourth proportional to 15,135.85, 20,884.08 and 9,167.41 is: 12,648.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,135.85 : 20,884.08 = 9,167.41 : x
  2. Step 2: Convert to fraction form
    15,135.85/20,884.08 = 9,167.41/x
  3. Step 3: Cross multiply
    15,135.85x = 20,884.08 × 9,167.41
  4. Step 4: Simplify right side
    15,135.85x = 191,452,923.83
  5. Step 5: Solve for x
    x = 191,452,923.83/15,135.85
  6. Step 6: Final answer
    x = 12,648.97

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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.