Home / 39,514.66-54,530.19-21,609.65

Finding the Fourth Proportional to 39,514.66, 54,530.19 and 21,609.65

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Solution

The fourth proportional to 39,514.66, 54,530.19 and 21,609.65 is: 29,821.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,514.66 : 54,530.19 = 21,609.65 : x
  2. Step 2: Convert to fraction form
    39,514.66/54,530.19 = 21,609.65/x
  3. Step 3: Cross multiply
    39,514.66x = 54,530.19 × 21,609.65
  4. Step 4: Simplify right side
    39,514.66x = 1,178,378,320.33
  5. Step 5: Solve for x
    x = 1,178,378,320.33/39,514.66
  6. Step 6: Final answer
    x = 29,821.30

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Double scale
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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.