Home / 39,065.18-53,906.09-21,834.36

Finding the Fourth Proportional to 39,065.18, 53,906.09 and 21,834.36

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Solution

The fourth proportional to 39,065.18, 53,906.09 and 21,834.36 is: 30,129.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,065.18 : 53,906.09 = 21,834.36 : x
  2. Step 2: Convert to fraction form
    39,065.18/53,906.09 = 21,834.36/x
  3. Step 3: Cross multiply
    39,065.18x = 53,906.09 × 21,834.36
  4. Step 4: Simplify right side
    39,065.18x = 1,177,004,975.25
  5. Step 5: Solve for x
    x = 1,177,004,975.25/39,065.18
  6. Step 6: Final answer
    x = 30,129.26

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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.