Home / 39,414.21-54,391.59-28,103.39

Finding the Fourth Proportional to 39,414.21, 54,391.59 and 28,103.39

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Solution

The fourth proportional to 39,414.21, 54,391.59 and 28,103.39 is: 38,782.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,414.21 : 54,391.59 = 28,103.39 : x
  2. Step 2: Convert to fraction form
    39,414.21/54,391.59 = 28,103.39/x
  3. Step 3: Cross multiply
    39,414.21x = 54,391.59 × 28,103.39
  4. Step 4: Simplify right side
    39,414.21x = 1,528,588,202.47
  5. Step 5: Solve for x
    x = 1,528,588,202.47/39,414.21
  6. Step 6: Final answer
    x = 38,782.67

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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.