Home / 11,243.74-15,517.42-8,406.20

Finding the Fourth Proportional to 11,243.74, 15,517.42 and 8,406.20

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Solution

The fourth proportional to 11,243.74, 15,517.42 and 8,406.20 is: 11,601.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,243.74 : 15,517.42 = 8,406.20 : x
  2. Step 2: Convert to fraction form
    11,243.74/15,517.42 = 8,406.20/x
  3. Step 3: Cross multiply
    11,243.74x = 15,517.42 × 8,406.20
  4. Step 4: Simplify right side
    11,243.74x = 130,442,536.00
  5. Step 5: Solve for x
    x = 130,442,536.00/11,243.74
  6. Step 6: Final answer
    x = 11,601.35

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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.