Home / 22,280.82-30,746.34-12,720.33

Finding the Fourth Proportional to 22,280.82, 30,746.34 and 12,720.33

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Solution

The fourth proportional to 22,280.82, 30,746.34 and 12,720.33 is: 17,553.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,280.82 : 30,746.34 = 12,720.33 : x
  2. Step 2: Convert to fraction form
    22,280.82/30,746.34 = 12,720.33/x
  3. Step 3: Cross multiply
    22,280.82x = 30,746.34 × 12,720.33
  4. Step 4: Simplify right side
    22,280.82x = 391,103,591.09
  5. Step 5: Solve for x
    x = 391,103,591.09/22,280.82
  6. Step 6: Final answer
    x = 17,553.38

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Double 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.