Home / 31,121.03-42,947.06-16,974.11

Finding the Fourth Proportional to 31,121.03, 42,947.06 and 16,974.11

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Solution

The fourth proportional to 31,121.03, 42,947.06 and 16,974.11 is: 23,424.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,121.03 : 42,947.06 = 16,974.11 : x
  2. Step 2: Convert to fraction form
    31,121.03/42,947.06 = 16,974.11/x
  3. Step 3: Cross multiply
    31,121.03x = 42,947.06 × 16,974.11
  4. Step 4: Simplify right side
    31,121.03x = 728,987,821.01
  5. Step 5: Solve for x
    x = 728,987,821.01/31,121.03
  6. Step 6: Final answer
    x = 23,424.29

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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.