Home / 39,085.88-53,937.72-21,858.19

Finding the Fourth Proportional to 39,085.88, 53,937.72 and 21,858.19

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Solution

The fourth proportional to 39,085.88, 53,937.72 and 21,858.19 is: 30,163.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,085.88 : 53,937.72 = 21,858.19 : x
  2. Step 2: Convert to fraction form
    39,085.88/53,937.72 = 21,858.19/x
  3. Step 3: Cross multiply
    39,085.88x = 53,937.72 × 21,858.19
  4. Step 4: Simplify right side
    39,085.88x = 1,178,981,086.11
  5. Step 5: Solve for x
    x = 1,178,981,086.11/39,085.88
  6. Step 6: Final answer
    x = 30,163.86

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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.