Home / 38,514.97-53,145.39-21,517.12

Finding the Fourth Proportional to 38,514.97, 53,145.39 and 21,517.12

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Solution

The fourth proportional to 38,514.97, 53,145.39 and 21,517.12 is: 29,690.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,514.97 : 53,145.39 = 21,517.12 : x
  2. Step 2: Convert to fraction form
    38,514.97/53,145.39 = 21,517.12/x
  3. Step 3: Cross multiply
    38,514.97x = 53,145.39 × 21,517.12
  4. Step 4: Simplify right side
    38,514.97x = 1,143,535,734.08
  5. Step 5: Solve for x
    x = 1,143,535,734.08/38,514.97
  6. Step 6: Final answer
    x = 29,690.68

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Half scale
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Double scale
Find fourth proportional to 38,515.97, 53,146.77 and 21,518.12
Similar ratio
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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.