Home / 11,605.56-16,018.20-7,131.66

Finding the Fourth Proportional to 11,605.56, 16,018.20 and 7,131.66

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Solution

The fourth proportional to 11,605.56, 16,018.20 and 7,131.66 is: 9,843.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,605.56 : 16,018.20 = 7,131.66 : x
  2. Step 2: Convert to fraction form
    11,605.56/16,018.20 = 7,131.66/x
  3. Step 3: Cross multiply
    11,605.56x = 16,018.20 × 7,131.66
  4. Step 4: Simplify right side
    11,605.56x = 114,236,356.21
  5. Step 5: Solve for x
    x = 114,236,356.21/11,605.56
  6. Step 6: Final answer
    x = 9,843.24

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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.