Home / 39,105.07-53,965.26-21,200.36

Finding the Fourth Proportional to 39,105.07, 53,965.26 and 21,200.36

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Solution

The fourth proportional to 39,105.07, 53,965.26 and 21,200.36 is: 29,256.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,105.07 : 53,965.26 = 21,200.36 : x
  2. Step 2: Convert to fraction form
    39,105.07/53,965.26 = 21,200.36/x
  3. Step 3: Cross multiply
    39,105.07x = 53,965.26 × 21,200.36
  4. Step 4: Simplify right side
    39,105.07x = 1,144,082,669.67
  5. Step 5: Solve for x
    x = 1,144,082,669.67/39,105.07
  6. Step 6: Final answer
    x = 29,256.63

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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.