Home / 31,079.98-42,890.40-16,932.86

Finding the Fourth Proportional to 31,079.98, 42,890.40 and 16,932.86

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Solution

The fourth proportional to 31,079.98, 42,890.40 and 16,932.86 is: 23,367.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,079.98 : 42,890.40 = 16,932.86 : x
  2. Step 2: Convert to fraction form
    31,079.98/42,890.40 = 16,932.86/x
  3. Step 3: Cross multiply
    31,079.98x = 42,890.40 × 16,932.86
  4. Step 4: Simplify right side
    31,079.98x = 726,257,138.54
  5. Step 5: Solve for x
    x = 726,257,138.54/31,079.98
  6. Step 6: Final answer
    x = 23,367.36

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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.