Home / 22,220.85-30,667.91-13,612.17

Finding the Fourth Proportional to 22,220.85, 30,667.91 and 13,612.17

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Solution

The fourth proportional to 22,220.85, 30,667.91 and 13,612.17 is: 18,786.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,220.85 : 30,667.91 = 13,612.17 : x
  2. Step 2: Convert to fraction form
    22,220.85/30,667.91 = 13,612.17/x
  3. Step 3: Cross multiply
    22,220.85x = 30,667.91 × 13,612.17
  4. Step 4: Simplify right side
    22,220.85x = 417,456,736.40
  5. Step 5: Solve for x
    x = 417,456,736.40/22,220.85
  6. Step 6: Final answer
    x = 18,786.71

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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.