Home / 11,389.82-15,719.31-6,674.09

Finding the Fourth Proportional to 11,389.82, 15,719.31 and 6,674.09

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Solution

The fourth proportional to 11,389.82, 15,719.31 and 6,674.09 is: 9,211.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,389.82 : 15,719.31 = 6,674.09 : x
  2. Step 2: Convert to fraction form
    11,389.82/15,719.31 = 6,674.09/x
  3. Step 3: Cross multiply
    11,389.82x = 15,719.31 × 6,674.09
  4. Step 4: Simplify right side
    11,389.82x = 104,912,128.98
  5. Step 5: Solve for x
    x = 104,912,128.98/11,389.82
  6. Step 6: Final answer
    x = 9,211.05

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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.