Home / 22,118.68-33,172.86-12,738.76

Finding the Fourth Proportional to 22,118.68, 33,172.86 and 12,738.76

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Solution

The fourth proportional to 22,118.68, 33,172.86 and 12,738.76 is: 19,105.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,118.68 : 33,172.86 = 12,738.76 : x
  2. Step 2: Convert to fraction form
    22,118.68/33,172.86 = 12,738.76/x
  3. Step 3: Cross multiply
    22,118.68x = 33,172.86 × 12,738.76
  4. Step 4: Simplify right side
    22,118.68x = 422,581,102.05
  5. Step 5: Solve for x
    x = 422,581,102.05/22,118.68
  6. Step 6: Final answer
    x = 19,105.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.