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Finding the Fourth Proportional to 12,829.08, 17,694.54 and 8,636.52

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Solution

The fourth proportional to 12,829.08, 17,694.54 and 8,636.52 is: 11,911.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,829.08 : 17,694.54 = 8,636.52 : x
  2. Step 2: Convert to fraction form
    12,829.08/17,694.54 = 8,636.52/x
  3. Step 3: Cross multiply
    12,829.08x = 17,694.54 × 8,636.52
  4. Step 4: Simplify right side
    12,829.08x = 152,819,248.60
  5. Step 5: Solve for x
    x = 152,819,248.60/12,829.08
  6. Step 6: Final answer
    x = 11,911.94

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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.