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Finding the Fourth Proportional to 12,476.64, 17,216.46 and 7,172.22

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Solution

The fourth proportional to 12,476.64, 17,216.46 and 7,172.22 is: 9,896.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,476.64 : 17,216.46 = 7,172.22 : x
  2. Step 2: Convert to fraction form
    12,476.64/17,216.46 = 7,172.22/x
  3. Step 3: Cross multiply
    12,476.64x = 17,216.46 × 7,172.22
  4. Step 4: Simplify right side
    12,476.64x = 123,480,238.74
  5. Step 5: Solve for x
    x = 123,480,238.74/12,476.64
  6. Step 6: Final answer
    x = 9,896.91

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.