Home / 31,122.10-42,948.39-16,974.82

Finding the Fourth Proportional to 31,122.10, 42,948.39 and 16,974.82

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Solution

The fourth proportional to 31,122.10, 42,948.39 and 16,974.82 is: 23,425.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,122.10 : 42,948.39 = 16,974.82 : x
  2. Step 2: Convert to fraction form
    31,122.10/42,948.39 = 16,974.82/x
  3. Step 3: Cross multiply
    31,122.10x = 42,948.39 × 16,974.82
  4. Step 4: Simplify right side
    31,122.10x = 729,041,189.54
  5. Step 5: Solve for x
    x = 729,041,189.54/31,122.10
  6. Step 6: Final answer
    x = 23,425.19

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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.