Home / 31,251.45-43,110.90-21,176.46

Finding the Fourth Proportional to 31,251.45, 43,110.90 and 21,176.46

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Solution

The fourth proportional to 31,251.45, 43,110.90 and 21,176.46 is: 29,212.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,251.45 : 43,110.90 = 21,176.46 : x
  2. Step 2: Convert to fraction form
    31,251.45/43,110.90 = 21,176.46/x
  3. Step 3: Cross multiply
    31,251.45x = 43,110.90 × 21,176.46
  4. Step 4: Simplify right side
    31,251.45x = 912,936,249.41
  5. Step 5: Solve for x
    x = 912,936,249.41/31,251.45
  6. Step 6: Final answer
    x = 29,212.60

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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.