Home / 11,367.16-15,682.32-8,390.08

Finding the Fourth Proportional to 11,367.16, 15,682.32 and 8,390.08

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Solution

The fourth proportional to 11,367.16, 15,682.32 and 8,390.08 is: 11,575.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,367.16 : 15,682.32 = 8,390.08 : x
  2. Step 2: Convert to fraction form
    11,367.16/15,682.32 = 8,390.08/x
  3. Step 3: Cross multiply
    11,367.16x = 15,682.32 × 8,390.08
  4. Step 4: Simplify right side
    11,367.16x = 131,575,919.39
  5. Step 5: Solve for x
    x = 131,575,919.39/11,367.16
  6. Step 6: Final answer
    x = 11,575.09

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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.