Home / 11,169.05-15,414.52-6,389.43

Finding the Fourth Proportional to 11,169.05, 15,414.52 and 6,389.43

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Solution

The fourth proportional to 11,169.05, 15,414.52 and 6,389.43 is: 8,818.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,169.05 : 15,414.52 = 6,389.43 : x
  2. Step 2: Convert to fraction form
    11,169.05/15,414.52 = 6,389.43/x
  3. Step 3: Cross multiply
    11,169.05x = 15,414.52 × 6,389.43
  4. Step 4: Simplify right side
    11,169.05x = 98,490,003.11
  5. Step 5: Solve for x
    x = 98,490,003.11/11,169.05
  6. Step 6: Final answer
    x = 8,818.12

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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.