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Finding the Fourth Proportional to 12,107.28, 16,708.68 and 7,391.28

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Solution

The fourth proportional to 12,107.28, 16,708.68 and 7,391.28 is: 10,200.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,107.28 : 16,708.68 = 7,391.28 : x
  2. Step 2: Convert to fraction form
    12,107.28/16,708.68 = 7,391.28/x
  3. Step 3: Cross multiply
    12,107.28x = 16,708.68 × 7,391.28
  4. Step 4: Simplify right side
    12,107.28x = 123,498,532.31
  5. Step 5: Solve for x
    x = 123,498,532.31/12,107.28
  6. Step 6: Final answer
    x = 10,200.35

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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.