Home / 39,814.36-54,945.12-21,910.66

Finding the Fourth Proportional to 39,814.36, 54,945.12 and 21,910.66

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Solution

The fourth proportional to 39,814.36, 54,945.12 and 21,910.66 is: 30,237.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,814.36 : 54,945.12 = 21,910.66 : x
  2. Step 2: Convert to fraction form
    39,814.36/54,945.12 = 21,910.66/x
  3. Step 3: Cross multiply
    39,814.36x = 54,945.12 × 21,910.66
  4. Step 4: Simplify right side
    39,814.36x = 1,203,883,842.98
  5. Step 5: Solve for x
    x = 1,203,883,842.98/39,814.36
  6. Step 6: Final answer
    x = 30,237.43

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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.