Home / 39,073.40-53,921.22-21,168.85

Finding the Fourth Proportional to 39,073.40, 53,921.22 and 21,168.85

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Solution

The fourth proportional to 39,073.40, 53,921.22 and 21,168.85 is: 29,212.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,073.40 : 53,921.22 = 21,168.85 : x
  2. Step 2: Convert to fraction form
    39,073.40/53,921.22 = 21,168.85/x
  3. Step 3: Cross multiply
    39,073.40x = 53,921.22 × 21,168.85
  4. Step 4: Simplify right side
    39,073.40x = 1,141,450,218.00
  5. Step 5: Solve for x
    x = 1,141,450,218.00/39,073.40
  6. Step 6: Final answer
    x = 29,212.97

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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.