Home / 11,919.45-16,454.96-8,398.38

Finding the Fourth Proportional to 11,919.45, 16,454.96 and 8,398.38

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Solution

The fourth proportional to 11,919.45, 16,454.96 and 8,398.38 is: 11,594.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.45 : 16,454.96 = 8,398.38 : x
  2. Step 2: Convert to fraction form
    11,919.45/16,454.96 = 8,398.38/x
  3. Step 3: Cross multiply
    11,919.45x = 16,454.96 × 8,398.38
  4. Step 4: Simplify right side
    11,919.45x = 138,194,924.69
  5. Step 5: Solve for x
    x = 138,194,924.69/11,919.45
  6. Step 6: Final answer
    x = 11,594.07

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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.