Home / 11,431.08-15,775.16-6,395.09

Finding the Fourth Proportional to 11,431.08, 15,775.16 and 6,395.09

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Solution

The fourth proportional to 11,431.08, 15,775.16 and 6,395.09 is: 8,825.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.08 : 15,775.16 = 6,395.09 : x
  2. Step 2: Convert to fraction form
    11,431.08/15,775.16 = 6,395.09/x
  3. Step 3: Cross multiply
    11,431.08x = 15,775.16 × 6,395.09
  4. Step 4: Simplify right side
    11,431.08x = 100,883,457.11
  5. Step 5: Solve for x
    x = 100,883,457.11/11,431.08
  6. Step 6: Final answer
    x = 8,825.37

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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.