Home / 31,022.06-42,809.20-16,874.90

Finding the Fourth Proportional to 31,022.06, 42,809.20 and 16,874.90

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Solution

The fourth proportional to 31,022.06, 42,809.20 and 16,874.90 is: 23,286.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,022.06 : 42,809.20 = 16,874.90 : x
  2. Step 2: Convert to fraction form
    31,022.06/42,809.20 = 16,874.90/x
  3. Step 3: Cross multiply
    31,022.06x = 42,809.20 × 16,874.90
  4. Step 4: Simplify right side
    31,022.06x = 722,400,969.08
  5. Step 5: Solve for x
    x = 722,400,969.08/31,022.06
  6. Step 6: Final answer
    x = 23,286.69

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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.