Home / 11,147.72-15,380.55-6,367.50

Finding the Fourth Proportional to 11,147.72, 15,380.55 and 6,367.50

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Solution

The fourth proportional to 11,147.72, 15,380.55 and 6,367.50 is: 8,785.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,147.72 : 15,380.55 = 6,367.50 : x
  2. Step 2: Convert to fraction form
    11,147.72/15,380.55 = 6,367.50/x
  3. Step 3: Cross multiply
    11,147.72x = 15,380.55 × 6,367.50
  4. Step 4: Simplify right side
    11,147.72x = 97,935,652.13
  5. Step 5: Solve for x
    x = 97,935,652.13/11,147.72
  6. Step 6: Final answer
    x = 8,785.27

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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.