Home / 12,743.26-19,116.60-3,979.06

Finding the Fourth Proportional to 12,743.26, 19,116.60 and 3,979.06

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Solution

The fourth proportional to 12,743.26, 19,116.60 and 3,979.06 is: 5,969.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,743.26 : 19,116.60 = 3,979.06 : x
  2. Step 2: Convert to fraction form
    12,743.26/19,116.60 = 3,979.06/x
  3. Step 3: Cross multiply
    12,743.26x = 19,116.60 × 3,979.06
  4. Step 4: Simplify right side
    12,743.26x = 76,066,098.40
  5. Step 5: Solve for x
    x = 76,066,098.40/12,743.26
  6. Step 6: Final answer
    x = 5,969.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.