Home / 31,108.05-42,928.38-16,960.86

Finding the Fourth Proportional to 31,108.05, 42,928.38 and 16,960.86

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Solution

The fourth proportional to 31,108.05, 42,928.38 and 16,960.86 is: 23,405.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,108.05 : 42,928.38 = 16,960.86 : x
  2. Step 2: Convert to fraction form
    31,108.05/42,928.38 = 16,960.86/x
  3. Step 3: Cross multiply
    31,108.05x = 42,928.38 × 16,960.86
  4. Step 4: Simplify right side
    31,108.05x = 728,102,243.21
  5. Step 5: Solve for x
    x = 728,102,243.21/31,108.05
  6. Step 6: Final answer
    x = 23,405.59

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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.