Home / 31,866.67-43,974.29-18,438.14

Finding the Fourth Proportional to 31,866.67, 43,974.29 and 18,438.14

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Solution

The fourth proportional to 31,866.67, 43,974.29 and 18,438.14 is: 25,443.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,866.67 : 43,974.29 = 18,438.14 : x
  2. Step 2: Convert to fraction form
    31,866.67/43,974.29 = 18,438.14/x
  3. Step 3: Cross multiply
    31,866.67x = 43,974.29 × 18,438.14
  4. Step 4: Simplify right side
    31,866.67x = 810,804,115.42
  5. Step 5: Solve for x
    x = 810,804,115.42/31,866.67
  6. Step 6: Final answer
    x = 25,443.64

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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.