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Finding the Fourth Proportional to 12,677.29, 18,995.41 and 7,731.97

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Solution

The fourth proportional to 12,677.29, 18,995.41 and 7,731.97 is: 11,585.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,677.29 : 18,995.41 = 7,731.97 : x
  2. Step 2: Convert to fraction form
    12,677.29/18,995.41 = 7,731.97/x
  3. Step 3: Cross multiply
    12,677.29x = 18,995.41 × 7,731.97
  4. Step 4: Simplify right side
    12,677.29x = 146,871,940.26
  5. Step 5: Solve for x
    x = 146,871,940.26/12,677.29
  6. Step 6: Final answer
    x = 11,585.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.