Home / 11,291.20-15,580.62-6,511.05

Finding the Fourth Proportional to 11,291.20, 15,580.62 and 6,511.05

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Solution

The fourth proportional to 11,291.20, 15,580.62 and 6,511.05 is: 8,984.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,291.20 : 15,580.62 = 6,511.05 : x
  2. Step 2: Convert to fraction form
    11,291.20/15,580.62 = 6,511.05/x
  3. Step 3: Cross multiply
    11,291.20x = 15,580.62 × 6,511.05
  4. Step 4: Simplify right side
    11,291.20x = 101,446,195.85
  5. Step 5: Solve for x
    x = 101,446,195.85/11,291.20
  6. Step 6: Final answer
    x = 8,984.54

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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.