Home / 12,621.72-18,932.58-7,995

Finding the Fourth Proportional to 12,621.72, 18,932.58 and 7,995

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Solution

The fourth proportional to 12,621.72, 18,932.58 and 7,995 is: 11,992.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.72 : 18,932.58 = 7,995 : x
  2. Step 2: Convert to fraction form
    12,621.72/18,932.58 = 7,995/x
  3. Step 3: Cross multiply
    12,621.72x = 18,932.58 × 7,995
  4. Step 4: Simplify right side
    12,621.72x = 151,365,977.10
  5. Step 5: Solve for x
    x = 151,365,977.10/12,621.72
  6. Step 6: Final answer
    x = 11,992.50

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Half scale
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Double scale
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Similar ratio
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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.