Home / 12,517.82-17,280.84-7,211.62

Finding the Fourth Proportional to 12,517.82, 17,280.84 and 7,211.62

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Solution

The fourth proportional to 12,517.82, 17,280.84 and 7,211.62 is: 9,955.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,517.82 : 17,280.84 = 7,211.62 : x
  2. Step 2: Convert to fraction form
    12,517.82/17,280.84 = 7,211.62/x
  3. Step 3: Cross multiply
    12,517.82x = 17,280.84 × 7,211.62
  4. Step 4: Simplify right side
    12,517.82x = 124,622,851.36
  5. Step 5: Solve for x
    x = 124,622,851.36/12,517.82
  6. Step 6: Final answer
    x = 9,955.64

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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.