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Finding the Fourth Proportional to 12,506.28, 17,258.04 and 6,917.28

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Solution

The fourth proportional to 12,506.28, 17,258.04 and 6,917.28 is: 9,545.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,506.28 : 17,258.04 = 6,917.28 : x
  2. Step 2: Convert to fraction form
    12,506.28/17,258.04 = 6,917.28/x
  3. Step 3: Cross multiply
    12,506.28x = 17,258.04 × 6,917.28
  4. Step 4: Simplify right side
    12,506.28x = 119,378,694.93
  5. Step 5: Solve for x
    x = 119,378,694.93/12,506.28
  6. Step 6: Final answer
    x = 9,545.50

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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.