Home / 12,431.44-18,629.58-6,887.32

Finding the Fourth Proportional to 12,431.44, 18,629.58 and 6,887.32

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Solution

The fourth proportional to 12,431.44, 18,629.58 and 6,887.32 is: 10,321.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.44 : 18,629.58 = 6,887.32 : x
  2. Step 2: Convert to fraction form
    12,431.44/18,629.58 = 6,887.32/x
  3. Step 3: Cross multiply
    12,431.44x = 18,629.58 × 6,887.32
  4. Step 4: Simplify right side
    12,431.44x = 128,307,878.93
  5. Step 5: Solve for x
    x = 128,307,878.93/12,431.44
  6. Step 6: Final answer
    x = 10,321.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.