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Finding the Fourth Proportional to 12,804.93, 17,660.57 and 8,825.13

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Solution

The fourth proportional to 12,804.93, 17,660.57 and 8,825.13 is: 12,171.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,804.93 : 17,660.57 = 8,825.13 : x
  2. Step 2: Convert to fraction form
    12,804.93/17,660.57 = 8,825.13/x
  3. Step 3: Cross multiply
    12,804.93x = 17,660.57 × 8,825.13
  4. Step 4: Simplify right side
    12,804.93x = 155,856,782.00
  5. Step 5: Solve for x
    x = 155,856,782.00/12,804.93
  6. Step 6: Final answer
    x = 12,171.62

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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.