Home / 39,766.76-54,878.24-21,863.60

Finding the Fourth Proportional to 39,766.76, 54,878.24 and 21,863.60

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Solution

The fourth proportional to 39,766.76, 54,878.24 and 21,863.60 is: 30,171.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,766.76 : 54,878.24 = 21,863.60 : x
  2. Step 2: Convert to fraction form
    39,766.76/54,878.24 = 21,863.60/x
  3. Step 3: Cross multiply
    39,766.76x = 54,878.24 × 21,863.60
  4. Step 4: Simplify right side
    39,766.76x = 1,199,835,888.06
  5. Step 5: Solve for x
    x = 1,199,835,888.06/39,766.76
  6. Step 6: Final answer
    x = 30,171.83

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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.