Home / 12,331.32-18,481.41-7,887.30

Finding the Fourth Proportional to 12,331.32, 18,481.41 and 7,887.30

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Solution

The fourth proportional to 12,331.32, 18,481.41 and 7,887.30 is: 11,820.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,331.32 : 18,481.41 = 7,887.30 : x
  2. Step 2: Convert to fraction form
    12,331.32/18,481.41 = 7,887.30/x
  3. Step 3: Cross multiply
    12,331.32x = 18,481.41 × 7,887.30
  4. Step 4: Simplify right side
    12,331.32x = 145,768,425.09
  5. Step 5: Solve for x
    x = 145,768,425.09/12,331.32
  6. Step 6: Final answer
    x = 11,820.99

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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.