Home / 31,262.62-43,137.76-18,991.66

Finding the Fourth Proportional to 31,262.62, 43,137.76 and 18,991.66

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Solution

The fourth proportional to 31,262.62, 43,137.76 and 18,991.66 is: 26,205.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,262.62 : 43,137.76 = 18,991.66 : x
  2. Step 2: Convert to fraction form
    31,262.62/43,137.76 = 18,991.66/x
  3. Step 3: Cross multiply
    31,262.62x = 43,137.76 × 18,991.66
  4. Step 4: Simplify right side
    31,262.62x = 819,257,671.08
  5. Step 5: Solve for x
    x = 819,257,671.08/31,262.62
  6. Step 6: Final answer
    x = 26,205.66

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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.