Home / 31,469.06-43,431.45-18,894.62

Finding the Fourth Proportional to 31,469.06, 43,431.45 and 18,894.62

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Solution

The fourth proportional to 31,469.06, 43,431.45 and 18,894.62 is: 26,077.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,469.06 : 43,431.45 = 18,894.62 : x
  2. Step 2: Convert to fraction form
    31,469.06/43,431.45 = 18,894.62/x
  3. Step 3: Cross multiply
    31,469.06x = 43,431.45 × 18,894.62
  4. Step 4: Simplify right side
    31,469.06x = 820,620,743.80
  5. Step 5: Solve for x
    x = 820,620,743.80/31,469.06
  6. Step 6: Final answer
    x = 26,077.07

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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.