Home / 9,730.22-13,415.61-8,115.85

Finding the Fourth Proportional to 9,730.22, 13,415.61 and 8,115.85

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Solution

The fourth proportional to 9,730.22, 13,415.61 and 8,115.85 is: 11,189.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,730.22 : 13,415.61 = 8,115.85 : x
  2. Step 2: Convert to fraction form
    9,730.22/13,415.61 = 8,115.85/x
  3. Step 3: Cross multiply
    9,730.22x = 13,415.61 × 8,115.85
  4. Step 4: Simplify right side
    9,730.22x = 108,879,078.42
  5. Step 5: Solve for x
    x = 108,879,078.42/9,730.22
  6. Step 6: Final answer
    x = 11,189.79

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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.