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Finding the Fourth Proportional to 12,896.62, 17,796.58 and 7,230.94

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Solution

The fourth proportional to 12,896.62, 17,796.58 and 7,230.94 is: 9,978.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,896.62 : 17,796.58 = 7,230.94 : x
  2. Step 2: Convert to fraction form
    12,896.62/17,796.58 = 7,230.94/x
  3. Step 3: Cross multiply
    12,896.62x = 17,796.58 × 7,230.94
  4. Step 4: Simplify right side
    12,896.62x = 128,686,002.19
  5. Step 5: Solve for x
    x = 128,686,002.19/12,896.62
  6. Step 6: Final answer
    x = 9,978.27

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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.