Home / 39,816.86-54,945.89-21,910.19

Finding the Fourth Proportional to 39,816.86, 54,945.89 and 21,910.19

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Solution

The fourth proportional to 39,816.86, 54,945.89 and 21,910.19 is: 30,235.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,816.86 : 54,945.89 = 21,910.19 : x
  2. Step 2: Convert to fraction form
    39,816.86/54,945.89 = 21,910.19/x
  3. Step 3: Cross multiply
    39,816.86x = 54,945.89 × 21,910.19
  4. Step 4: Simplify right side
    39,816.86x = 1,203,874,505.34
  5. Step 5: Solve for x
    x = 1,203,874,505.34/39,816.86
  6. Step 6: Final answer
    x = 30,235.30

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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.