Home / 31,129.09-42,958.25-16,982.23

Finding the Fourth Proportional to 31,129.09, 42,958.25 and 16,982.23

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Solution

The fourth proportional to 31,129.09, 42,958.25 and 16,982.23 is: 23,435.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,129.09 : 42,958.25 = 16,982.23 : x
  2. Step 2: Convert to fraction form
    31,129.09/42,958.25 = 16,982.23/x
  3. Step 3: Cross multiply
    31,129.09x = 42,958.25 × 16,982.23
  4. Step 4: Simplify right side
    31,129.09x = 729,526,796.99
  5. Step 5: Solve for x
    x = 729,526,796.99/31,129.09
  6. Step 6: Final answer
    x = 23,435.53

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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.