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Finding the Fourth Proportional to 12,164.51, 16,787.04 and 7,127.73

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Solution

The fourth proportional to 12,164.51, 16,787.04 and 7,127.73 is: 9,836.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,164.51 : 16,787.04 = 7,127.73 : x
  2. Step 2: Convert to fraction form
    12,164.51/16,787.04 = 7,127.73/x
  3. Step 3: Cross multiply
    12,164.51x = 16,787.04 × 7,127.73
  4. Step 4: Simplify right side
    12,164.51x = 119,653,390.03
  5. Step 5: Solve for x
    x = 119,653,390.03/12,164.51
  6. Step 6: Final answer
    x = 9,836.27

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Double scale
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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.