Home / 22,261.69-30,721.51-12,189.97

Finding the Fourth Proportional to 22,261.69, 30,721.51 and 12,189.97

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Solution

The fourth proportional to 22,261.69, 30,721.51 and 12,189.97 is: 16,822.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,261.69 : 30,721.51 = 12,189.97 : x
  2. Step 2: Convert to fraction form
    22,261.69/30,721.51 = 12,189.97/x
  3. Step 3: Cross multiply
    22,261.69x = 30,721.51 × 12,189.97
  4. Step 4: Simplify right side
    22,261.69x = 374,494,285.25
  5. Step 5: Solve for x
    x = 374,494,285.25/22,261.69
  6. Step 6: Final answer
    x = 16,822.37

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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.