Home / 11,431.22-15,775.69-6,395.14

Finding the Fourth Proportional to 11,431.22, 15,775.69 and 6,395.14

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Solution

The fourth proportional to 11,431.22, 15,775.69 and 6,395.14 is: 8,825.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.22 : 15,775.69 = 6,395.14 : x
  2. Step 2: Convert to fraction form
    11,431.22/15,775.69 = 6,395.14/x
  3. Step 3: Cross multiply
    11,431.22x = 15,775.69 × 6,395.14
  4. Step 4: Simplify right side
    11,431.22x = 100,887,667.27
  5. Step 5: Solve for x
    x = 100,887,667.27/11,431.22
  6. Step 6: Final answer
    x = 8,825.63

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Half scale
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Double scale
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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.