Home / 31,225.82-43,087.77-19,890.66

Finding the Fourth Proportional to 31,225.82, 43,087.77 and 19,890.66

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Solution

The fourth proportional to 31,225.82, 43,087.77 and 19,890.66 is: 27,446.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,225.82 : 43,087.77 = 19,890.66 : x
  2. Step 2: Convert to fraction form
    31,225.82/43,087.77 = 19,890.66/x
  3. Step 3: Cross multiply
    31,225.82x = 43,087.77 × 19,890.66
  4. Step 4: Simplify right side
    31,225.82x = 857,044,183.23
  5. Step 5: Solve for x
    x = 857,044,183.23/31,225.82
  6. Step 6: Final answer
    x = 27,446.66

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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.