Home / 31,213.35-43,087.95-19,899.27

Finding the Fourth Proportional to 31,213.35, 43,087.95 and 19,899.27

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Solution

The fourth proportional to 31,213.35, 43,087.95 and 19,899.27 is: 27,469.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,213.35 : 43,087.95 = 19,899.27 : x
  2. Step 2: Convert to fraction form
    31,213.35/43,087.95 = 19,899.27/x
  3. Step 3: Cross multiply
    31,213.35x = 43,087.95 × 19,899.27
  4. Step 4: Simplify right side
    31,213.35x = 857,418,750.80
  5. Step 5: Solve for x
    x = 857,418,750.80/31,213.35
  6. Step 6: Final answer
    x = 27,469.62

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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.