Home / 31,129.59-42,958.77-16,982.43

Finding the Fourth Proportional to 31,129.59, 42,958.77 and 16,982.43

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Solution

The fourth proportional to 31,129.59, 42,958.77 and 16,982.43 is: 23,435.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,129.59 : 42,958.77 = 16,982.43 : x
  2. Step 2: Convert to fraction form
    31,129.59/42,958.77 = 16,982.43/x
  3. Step 3: Cross multiply
    31,129.59x = 42,958.77 × 16,982.43
  4. Step 4: Simplify right side
    31,129.59x = 729,544,304.41
  5. Step 5: Solve for x
    x = 729,544,304.41/31,129.59
  6. Step 6: Final answer
    x = 23,435.72

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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.