Home / 12,431.49-18,647.24-10,235.61

Finding the Fourth Proportional to 12,431.49, 18,647.24 and 10,235.61

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Solution

The fourth proportional to 12,431.49, 18,647.24 and 10,235.61 is: 15,353.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.49 : 18,647.24 = 10,235.61 : x
  2. Step 2: Convert to fraction form
    12,431.49/18,647.24 = 10,235.61/x
  3. Step 3: Cross multiply
    12,431.49x = 18,647.24 × 10,235.61
  4. Step 4: Simplify right side
    12,431.49x = 190,865,876.22
  5. Step 5: Solve for x
    x = 190,865,876.22/12,431.49
  6. Step 6: Final answer
    x = 15,353.42

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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.