Home / 11,221.48-15,480.90-6,745.32

Finding the Fourth Proportional to 11,221.48, 15,480.90 and 6,745.32

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Solution

The fourth proportional to 11,221.48, 15,480.90 and 6,745.32 is: 9,305.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.48 : 15,480.90 = 6,745.32 : x
  2. Step 2: Convert to fraction form
    11,221.48/15,480.90 = 6,745.32/x
  3. Step 3: Cross multiply
    11,221.48x = 15,480.90 × 6,745.32
  4. Step 4: Simplify right side
    11,221.48x = 104,423,624.39
  5. Step 5: Solve for x
    x = 104,423,624.39/11,221.48
  6. Step 6: Final answer
    x = 9,305.69

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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.