Home / 31,121.11-42,947.72-16,974.46

Finding the Fourth Proportional to 31,121.11, 42,947.72 and 16,974.46

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Solution

The fourth proportional to 31,121.11, 42,947.72 and 16,974.46 is: 23,425.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,121.11 : 42,947.72 = 16,974.46 : x
  2. Step 2: Convert to fraction form
    31,121.11/42,947.72 = 16,974.46/x
  3. Step 3: Cross multiply
    31,121.11x = 42,947.72 × 16,974.46
  4. Step 4: Simplify right side
    31,121.11x = 729,014,270.36
  5. Step 5: Solve for x
    x = 729,014,270.36/31,121.11
  6. Step 6: Final answer
    x = 23,425.07

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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.