Home / 19,651.66-27,121.69-11,156.43

Finding the Fourth Proportional to 19,651.66, 27,121.69 and 11,156.43

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Solution

The fourth proportional to 19,651.66, 27,121.69 and 11,156.43 is: 15,397.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,651.66 : 27,121.69 = 11,156.43 : x
  2. Step 2: Convert to fraction form
    19,651.66/27,121.69 = 11,156.43/x
  3. Step 3: Cross multiply
    19,651.66x = 27,121.69 × 11,156.43
  4. Step 4: Simplify right side
    19,651.66x = 302,581,288.86
  5. Step 5: Solve for x
    x = 302,581,288.86/19,651.66
  6. Step 6: Final answer
    x = 15,397.24

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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.