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Finding the Fourth Proportional to 11,613.40, 17,400.90 and 10,922.20

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Solution

The fourth proportional to 11,613.40, 17,400.90 and 10,922.20 is: 16,365.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,613.40 : 17,400.90 = 10,922.20 : x
  2. Step 2: Convert to fraction form
    11,613.40/17,400.90 = 10,922.20/x
  3. Step 3: Cross multiply
    11,613.40x = 17,400.90 × 10,922.20
  4. Step 4: Simplify right side
    11,613.40x = 190,056,109.98
  5. Step 5: Solve for x
    x = 190,056,109.98/11,613.40
  6. Step 6: Final answer
    x = 16,365.24

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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.