Home / 39,091.13-53,945.72-21,186.13

Finding the Fourth Proportional to 39,091.13, 53,945.72 and 21,186.13

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Solution

The fourth proportional to 39,091.13, 53,945.72 and 21,186.13 is: 29,236.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,091.13 : 53,945.72 = 21,186.13 : x
  2. Step 2: Convert to fraction form
    39,091.13/53,945.72 = 21,186.13/x
  3. Step 3: Cross multiply
    39,091.13x = 53,945.72 × 21,186.13
  4. Step 4: Simplify right side
    39,091.13x = 1,142,900,767.14
  5. Step 5: Solve for x
    x = 1,142,900,767.14/39,091.13
  6. Step 6: Final answer
    x = 29,236.83

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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.