Home / 31,101.91-42,919.78-16,954.75

Finding the Fourth Proportional to 31,101.91, 42,919.78 and 16,954.75

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Solution

The fourth proportional to 31,101.91, 42,919.78 and 16,954.75 is: 23,397.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,101.91 : 42,919.78 = 16,954.75 : x
  2. Step 2: Convert to fraction form
    31,101.91/42,919.78 = 16,954.75/x
  3. Step 3: Cross multiply
    31,101.91x = 42,919.78 × 16,954.75
  4. Step 4: Simplify right side
    31,101.91x = 727,694,139.96
  5. Step 5: Solve for x
    x = 727,694,139.96/31,101.91
  6. Step 6: Final answer
    x = 23,397.09

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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.