Home / 22,190.11-30,621.13-12,118.39

Finding the Fourth Proportional to 22,190.11, 30,621.13 and 12,118.39

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Solution

The fourth proportional to 22,190.11, 30,621.13 and 12,118.39 is: 16,722.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,190.11 : 30,621.13 = 12,118.39 : x
  2. Step 2: Convert to fraction form
    22,190.11/30,621.13 = 12,118.39/x
  3. Step 3: Cross multiply
    22,190.11x = 30,621.13 × 12,118.39
  4. Step 4: Simplify right side
    22,190.11x = 371,078,688.73
  5. Step 5: Solve for x
    x = 371,078,688.73/22,190.11
  6. Step 6: Final answer
    x = 16,722.71

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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.