Home / 11,921.08-16,451.84-6,886.22

Finding the Fourth Proportional to 11,921.08, 16,451.84 and 6,886.22

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Solution

The fourth proportional to 11,921.08, 16,451.84 and 6,886.22 is: 9,503.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.08 : 16,451.84 = 6,886.22 : x
  2. Step 2: Convert to fraction form
    11,921.08/16,451.84 = 6,886.22/x
  3. Step 3: Cross multiply
    11,921.08x = 16,451.84 × 6,886.22
  4. Step 4: Simplify right side
    11,921.08x = 113,290,989.64
  5. Step 5: Solve for x
    x = 113,290,989.64/11,921.08
  6. Step 6: Final answer
    x = 9,503.42

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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.