Home / 22,019.73-30,200.39-21,115.54

Finding the Fourth Proportional to 22,019.73, 30,200.39 and 21,115.54

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Solution

The fourth proportional to 22,019.73, 30,200.39 and 21,115.54 is: 28,960.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,019.73 : 30,200.39 = 21,115.54 : x
  2. Step 2: Convert to fraction form
    22,019.73/30,200.39 = 21,115.54/x
  3. Step 3: Cross multiply
    22,019.73x = 30,200.39 × 21,115.54
  4. Step 4: Simplify right side
    22,019.73x = 637,697,543.06
  5. Step 5: Solve for x
    x = 637,697,543.06/22,019.73
  6. Step 6: Final answer
    x = 28,960.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.