Home / 31,605.12-43,618.32-18,176.88

Finding the Fourth Proportional to 31,605.12, 43,618.32 and 18,176.88

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Solution

The fourth proportional to 31,605.12, 43,618.32 and 18,176.88 is: 25,085.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,605.12 : 43,618.32 = 18,176.88 : x
  2. Step 2: Convert to fraction form
    31,605.12/43,618.32 = 18,176.88/x
  3. Step 3: Cross multiply
    31,605.12x = 43,618.32 × 18,176.88
  4. Step 4: Simplify right side
    31,605.12x = 792,844,968.44
  5. Step 5: Solve for x
    x = 792,844,968.44/31,605.12
  6. Step 6: Final answer
    x = 25,085.97

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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.