Home / 20,121.77-27,760.98-11,623.65

Finding the Fourth Proportional to 20,121.77, 27,760.98 and 11,623.65

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Solution

The fourth proportional to 20,121.77, 27,760.98 and 11,623.65 is: 16,036.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.77 : 27,760.98 = 11,623.65 : x
  2. Step 2: Convert to fraction form
    20,121.77/27,760.98 = 11,623.65/x
  3. Step 3: Cross multiply
    20,121.77x = 27,760.98 × 11,623.65
  4. Step 4: Simplify right side
    20,121.77x = 322,683,945.43
  5. Step 5: Solve for x
    x = 322,683,945.43/20,121.77
  6. Step 6: Final answer
    x = 16,036.56

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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.