Home / 20,297.49-28,013.60-12,338.17

Finding the Fourth Proportional to 20,297.49, 28,013.60 and 12,338.17

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Solution

The fourth proportional to 20,297.49, 28,013.60 and 12,338.17 is: 17,028.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,297.49 : 28,013.60 = 12,338.17 : x
  2. Step 2: Convert to fraction form
    20,297.49/28,013.60 = 12,338.17/x
  3. Step 3: Cross multiply
    20,297.49x = 28,013.60 × 12,338.17
  4. Step 4: Simplify right side
    20,297.49x = 345,636,608.10
  5. Step 5: Solve for x
    x = 345,636,608.10/20,297.49
  6. Step 6: Final answer
    x = 17,028.54

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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.