Home / 12,201.04-18,286.80-8,731

Finding the Fourth Proportional to 12,201.04, 18,286.80 and 8,731

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Solution

The fourth proportional to 12,201.04, 18,286.80 and 8,731 is: 13,085.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,201.04 : 18,286.80 = 8,731 : x
  2. Step 2: Convert to fraction form
    12,201.04/18,286.80 = 8,731/x
  3. Step 3: Cross multiply
    12,201.04x = 18,286.80 × 8,731
  4. Step 4: Simplify right side
    12,201.04x = 159,662,050.80
  5. Step 5: Solve for x
    x = 159,662,050.80/12,201.04
  6. Step 6: Final answer
    x = 13,085.94

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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.