Home / 11,475.81-15,843.20-8,765.69

Finding the Fourth Proportional to 11,475.81, 15,843.20 and 8,765.69

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Solution

The fourth proportional to 11,475.81, 15,843.20 and 8,765.69 is: 12,101.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,475.81 : 15,843.20 = 8,765.69 : x
  2. Step 2: Convert to fraction form
    11,475.81/15,843.20 = 8,765.69/x
  3. Step 3: Cross multiply
    11,475.81x = 15,843.20 × 8,765.69
  4. Step 4: Simplify right side
    11,475.81x = 138,876,456.76
  5. Step 5: Solve for x
    x = 138,876,456.76/11,475.81
  6. Step 6: Final answer
    x = 12,101.67

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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.