Home / 12,156.96-18,235.60-3,391.96

Finding the Fourth Proportional to 12,156.96, 18,235.60 and 3,391.96

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Solution

The fourth proportional to 12,156.96, 18,235.60 and 3,391.96 is: 5,087.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.96 : 18,235.60 = 3,391.96 : x
  2. Step 2: Convert to fraction form
    12,156.96/18,235.60 = 3,391.96/x
  3. Step 3: Cross multiply
    12,156.96x = 18,235.60 × 3,391.96
  4. Step 4: Simplify right side
    12,156.96x = 61,854,425.78
  5. Step 5: Solve for x
    x = 61,854,425.78/12,156.96
  6. Step 6: Final answer
    x = 5,087.98

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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.