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Finding the Fourth Proportional to 12,798.36, 17,661 and 7,132.92

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Solution

The fourth proportional to 12,798.36, 17,661 and 7,132.92 is: 9,843.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798.36 : 17,661 = 7,132.92 : x
  2. Step 2: Convert to fraction form
    12,798.36/17,661 = 7,132.92/x
  3. Step 3: Cross multiply
    12,798.36x = 17,661 × 7,132.92
  4. Step 4: Simplify right side
    12,798.36x = 125,974,500.12
  5. Step 5: Solve for x
    x = 125,974,500.12/12,798.36
  6. Step 6: Final answer
    x = 9,843.02

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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.