Home / 31,102.86-42,921.92-16,955.70

Finding the Fourth Proportional to 31,102.86, 42,921.92 and 16,955.70

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Solution

The fourth proportional to 31,102.86, 42,921.92 and 16,955.70 is: 23,398.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,102.86 : 42,921.92 = 16,955.70 : x
  2. Step 2: Convert to fraction form
    31,102.86/42,921.92 = 16,955.70/x
  3. Step 3: Cross multiply
    31,102.86x = 42,921.92 × 16,955.70
  4. Step 4: Simplify right side
    31,102.86x = 727,771,198.94
  5. Step 5: Solve for x
    x = 727,771,198.94/31,102.86
  6. Step 6: Final answer
    x = 23,398.85

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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.