Home / 22,260.69-30,720.13-12,188.97

Finding the Fourth Proportional to 22,260.69, 30,720.13 and 12,188.97

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Solution

The fourth proportional to 22,260.69, 30,720.13 and 12,188.97 is: 16,820.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,260.69 : 30,720.13 = 12,188.97 : x
  2. Step 2: Convert to fraction form
    22,260.69/30,720.13 = 12,188.97/x
  3. Step 3: Cross multiply
    22,260.69x = 30,720.13 × 12,188.97
  4. Step 4: Simplify right side
    22,260.69x = 374,446,712.49
  5. Step 5: Solve for x
    x = 374,446,712.49/22,260.69
  6. Step 6: Final answer
    x = 16,820.98

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Half scale
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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.