Home / 13,620.66-20,440.71-4,855.65

Finding the Fourth Proportional to 13,620.66, 20,440.71 and 4,855.65

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Solution

The fourth proportional to 13,620.66, 20,440.71 and 4,855.65 is: 7,286.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.66 : 20,440.71 = 4,855.65 : x
  2. Step 2: Convert to fraction form
    13,620.66/20,440.71 = 4,855.65/x
  3. Step 3: Cross multiply
    13,620.66x = 20,440.71 × 4,855.65
  4. Step 4: Simplify right side
    13,620.66x = 99,252,933.51
  5. Step 5: Solve for x
    x = 99,252,933.51/13,620.66
  6. Step 6: Final answer
    x = 7,286.94

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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.