Home / 11,151.90-15,388.89-6,372.09

Finding the Fourth Proportional to 11,151.90, 15,388.89 and 6,372.09

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Solution

The fourth proportional to 11,151.90, 15,388.89 and 6,372.09 is: 8,793.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.90 : 15,388.89 = 6,372.09 : x
  2. Step 2: Convert to fraction form
    11,151.90/15,388.89 = 6,372.09/x
  3. Step 3: Cross multiply
    11,151.90x = 15,388.89 × 6,372.09
  4. Step 4: Simplify right side
    11,151.90x = 98,059,392.08
  5. Step 5: Solve for x
    x = 98,059,392.08/11,151.90
  6. Step 6: Final answer
    x = 8,793.07

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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.