Home / 12,974.31-17,906.43-7,937.70

Finding the Fourth Proportional to 12,974.31, 17,906.43 and 7,937.70

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Solution

The fourth proportional to 12,974.31, 17,906.43 and 7,937.70 is: 10,955.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,974.31 : 17,906.43 = 7,937.70 : x
  2. Step 2: Convert to fraction form
    12,974.31/17,906.43 = 7,937.70/x
  3. Step 3: Cross multiply
    12,974.31x = 17,906.43 × 7,937.70
  4. Step 4: Simplify right side
    12,974.31x = 142,135,869.41
  5. Step 5: Solve for x
    x = 142,135,869.41/12,974.31
  6. Step 6: Final answer
    x = 10,955.18

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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.