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Finding the Fourth Proportional to 18,613.54, 27,922.14 and 6,128.48

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Solution

The fourth proportional to 18,613.54, 27,922.14 and 6,128.48 is: 9,193.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613.54 : 27,922.14 = 6,128.48 : x
  2. Step 2: Convert to fraction form
    18,613.54/27,922.14 = 6,128.48/x
  3. Step 3: Cross multiply
    18,613.54x = 27,922.14 × 6,128.48
  4. Step 4: Simplify right side
    18,613.54x = 171,120,276.55
  5. Step 5: Solve for x
    x = 171,120,276.55/18,613.54
  6. Step 6: Final answer
    x = 9,193.32

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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.