Home / 13,231.94-18,261-8,747.90

Finding the Fourth Proportional to 13,231.94, 18,261 and 8,747.90

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Solution

The fourth proportional to 13,231.94, 18,261 and 8,747.90 is: 12,072.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,231.94 : 18,261 = 8,747.90 : x
  2. Step 2: Convert to fraction form
    13,231.94/18,261 = 8,747.90/x
  3. Step 3: Cross multiply
    13,231.94x = 18,261 × 8,747.90
  4. Step 4: Simplify right side
    13,231.94x = 159,745,401.90
  5. Step 5: Solve for x
    x = 159,745,401.90/13,231.94
  6. Step 6: Final answer
    x = 12,072.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.