Home / 38,782.91-53,517.26-21,786.23

Finding the Fourth Proportional to 38,782.91, 53,517.26 and 21,786.23

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Solution

The fourth proportional to 38,782.91, 53,517.26 and 21,786.23 is: 30,063.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,782.91 : 53,517.26 = 21,786.23 : x
  2. Step 2: Convert to fraction form
    38,782.91/53,517.26 = 21,786.23/x
  3. Step 3: Cross multiply
    38,782.91x = 53,517.26 × 21,786.23
  4. Step 4: Simplify right side
    38,782.91x = 1,165,938,958.81
  5. Step 5: Solve for x
    x = 1,165,938,958.81/38,782.91
  6. Step 6: Final answer
    x = 30,063.22

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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.