Home / 39,758.25-54,866.75-21,609.14

Finding the Fourth Proportional to 39,758.25, 54,866.75 and 21,609.14

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Solution

The fourth proportional to 39,758.25, 54,866.75 and 21,609.14 is: 29,820.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,758.25 : 54,866.75 = 21,609.14 : x
  2. Step 2: Convert to fraction form
    39,758.25/54,866.75 = 21,609.14/x
  3. Step 3: Cross multiply
    39,758.25x = 54,866.75 × 21,609.14
  4. Step 4: Simplify right side
    39,758.25x = 1,185,623,240.48
  5. Step 5: Solve for x
    x = 1,185,623,240.48/39,758.25
  6. Step 6: Final answer
    x = 29,820.81

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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.