Home / 11,921.76-16,454.96-6,888.88

Finding the Fourth Proportional to 11,921.76, 16,454.96 and 6,888.88

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Solution

The fourth proportional to 11,921.76, 16,454.96 and 6,888.88 is: 9,508.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.76 : 16,454.96 = 6,888.88 : x
  2. Step 2: Convert to fraction form
    11,921.76/16,454.96 = 6,888.88/x
  3. Step 3: Cross multiply
    11,921.76x = 16,454.96 × 6,888.88
  4. Step 4: Simplify right side
    11,921.76x = 113,356,244.84
  5. Step 5: Solve for x
    x = 113,356,244.84/11,921.76
  6. Step 6: Final answer
    x = 9,508.35

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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.