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Finding the Fourth Proportional to 12,497.92, 17,252.68 and 7,785.34

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Solution

The fourth proportional to 12,497.92, 17,252.68 and 7,785.34 is: 10,747.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,497.92 : 17,252.68 = 7,785.34 : x
  2. Step 2: Convert to fraction form
    12,497.92/17,252.68 = 7,785.34/x
  3. Step 3: Cross multiply
    12,497.92x = 17,252.68 × 7,785.34
  4. Step 4: Simplify right side
    12,497.92x = 134,317,979.71
  5. Step 5: Solve for x
    x = 134,317,979.71/12,497.92
  6. Step 6: Final answer
    x = 10,747.23

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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.