Home / 31,129.14-42,958.20-16,982.08

Finding the Fourth Proportional to 31,129.14, 42,958.20 and 16,982.08

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Solution

The fourth proportional to 31,129.14, 42,958.20 and 16,982.08 is: 23,435.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,129.14 : 42,958.20 = 16,982.08 : x
  2. Step 2: Convert to fraction form
    31,129.14/42,958.20 = 16,982.08/x
  3. Step 3: Cross multiply
    31,129.14x = 42,958.20 × 16,982.08
  4. Step 4: Simplify right side
    31,129.14x = 729,519,589.06
  5. Step 5: Solve for x
    x = 729,519,589.06/31,129.14
  6. Step 6: Final answer
    x = 23,435.26

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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.