Home / 12,431.72-18,647.58-3,197

Finding the Fourth Proportional to 12,431.72, 18,647.58 and 3,197

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Solution

The fourth proportional to 12,431.72, 18,647.58 and 3,197 is: 4,795.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.72 : 18,647.58 = 3,197 : x
  2. Step 2: Convert to fraction form
    12,431.72/18,647.58 = 3,197/x
  3. Step 3: Cross multiply
    12,431.72x = 18,647.58 × 3,197
  4. Step 4: Simplify right side
    12,431.72x = 59,616,313.26
  5. Step 5: Solve for x
    x = 59,616,313.26/12,431.72
  6. Step 6: Final answer
    x = 4,795.50

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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.