Home / 31,620.66-43,631.25-18,879

Finding the Fourth Proportional to 31,620.66, 43,631.25 and 18,879

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Solution

The fourth proportional to 31,620.66, 43,631.25 and 18,879 is: 26,049.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,620.66 : 43,631.25 = 18,879 : x
  2. Step 2: Convert to fraction form
    31,620.66/43,631.25 = 18,879/x
  3. Step 3: Cross multiply
    31,620.66x = 43,631.25 × 18,879
  4. Step 4: Simplify right side
    31,620.66x = 823,714,368.75
  5. Step 5: Solve for x
    x = 823,714,368.75/31,620.66
  6. Step 6: Final answer
    x = 26,049.88

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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.