Home / 39,105.88-53,966.49-21,200.84

Finding the Fourth Proportional to 39,105.88, 53,966.49 and 21,200.84

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Solution

The fourth proportional to 39,105.88, 53,966.49 and 21,200.84 is: 29,257.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,105.88 : 53,966.49 = 21,200.84 : x
  2. Step 2: Convert to fraction form
    39,105.88/53,966.49 = 21,200.84/x
  3. Step 3: Cross multiply
    39,105.88x = 53,966.49 × 21,200.84
  4. Step 4: Simplify right side
    39,105.88x = 1,144,134,919.85
  5. Step 5: Solve for x
    x = 1,144,134,919.85/39,105.88
  6. Step 6: Final answer
    x = 29,257.36

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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.