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Finding the Fourth Proportional to 13,651.78, 20,469.27 and 6,258.51

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Solution

The fourth proportional to 13,651.78, 20,469.27 and 6,258.51 is: 9,383.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.78 : 20,469.27 = 6,258.51 : x
  2. Step 2: Convert to fraction form
    13,651.78/20,469.27 = 6,258.51/x
  3. Step 3: Cross multiply
    13,651.78x = 20,469.27 × 6,258.51
  4. Step 4: Simplify right side
    13,651.78x = 128,107,130.99
  5. Step 5: Solve for x
    x = 128,107,130.99/13,651.78
  6. Step 6: Final answer
    x = 9,383.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.