Home / 12,338.62-17,030.46-7,620.20

Finding the Fourth Proportional to 12,338.62, 17,030.46 and 7,620.20

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Solution

The fourth proportional to 12,338.62, 17,030.46 and 7,620.20 is: 10,517.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,338.62 : 17,030.46 = 7,620.20 : x
  2. Step 2: Convert to fraction form
    12,338.62/17,030.46 = 7,620.20/x
  3. Step 3: Cross multiply
    12,338.62x = 17,030.46 × 7,620.20
  4. Step 4: Simplify right side
    12,338.62x = 129,775,511.29
  5. Step 5: Solve for x
    x = 129,775,511.29/12,338.62
  6. Step 6: Final answer
    x = 10,517.83

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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.