Home / 11,121.13-16,681.69-2,801.79

Finding the Fourth Proportional to 11,121.13, 16,681.69 and 2,801.79

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Solution

The fourth proportional to 11,121.13, 16,681.69 and 2,801.79 is: 4,202.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.13 : 16,681.69 = 2,801.79 : x
  2. Step 2: Convert to fraction form
    11,121.13/16,681.69 = 2,801.79/x
  3. Step 3: Cross multiply
    11,121.13x = 16,681.69 × 2,801.79
  4. Step 4: Simplify right side
    11,121.13x = 46,738,592.23
  5. Step 5: Solve for x
    x = 46,738,592.23/11,121.13
  6. Step 6: Final answer
    x = 4,202.68

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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.