Home / 38,511.33-53,142.57-21,514.23

Finding the Fourth Proportional to 38,511.33, 53,142.57 and 21,514.23

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Solution

The fourth proportional to 38,511.33, 53,142.57 and 21,514.23 is: 29,687.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,511.33 : 53,142.57 = 21,514.23 : x
  2. Step 2: Convert to fraction form
    38,511.33/53,142.57 = 21,514.23/x
  3. Step 3: Cross multiply
    38,511.33x = 53,142.57 × 21,514.23
  4. Step 4: Simplify right side
    38,511.33x = 1,143,321,473.77
  5. Step 5: Solve for x
    x = 1,143,321,473.77/38,511.33
  6. Step 6: Final answer
    x = 29,687.92

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Half scale
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Double scale
Find fourth proportional to 38,512.33, 53,143.95 and 21,515.23
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.