Home / 31,105.79-42,926.66-16,958.73

Finding the Fourth Proportional to 31,105.79, 42,926.66 and 16,958.73

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Solution

The fourth proportional to 31,105.79, 42,926.66 and 16,958.73 is: 23,403.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,105.79 : 42,926.66 = 16,958.73 : x
  2. Step 2: Convert to fraction form
    31,105.79/42,926.66 = 16,958.73/x
  3. Step 3: Cross multiply
    31,105.79x = 42,926.66 × 16,958.73
  4. Step 4: Simplify right side
    31,105.79x = 727,981,551.95
  5. Step 5: Solve for x
    x = 727,981,551.95/31,105.79
  6. Step 6: Final answer
    x = 23,403.41

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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.