Home / 11,231.78-15,499.48-6,451.58

Finding the Fourth Proportional to 11,231.78, 15,499.48 and 6,451.58

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Solution

The fourth proportional to 11,231.78, 15,499.48 and 6,451.58 is: 8,902.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,231.78 : 15,499.48 = 6,451.58 : x
  2. Step 2: Convert to fraction form
    11,231.78/15,499.48 = 6,451.58/x
  3. Step 3: Cross multiply
    11,231.78x = 15,499.48 × 6,451.58
  4. Step 4: Simplify right side
    11,231.78x = 99,996,135.18
  5. Step 5: Solve for x
    x = 99,996,135.18/11,231.78
  6. Step 6: Final answer
    x = 8,902.96

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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.