Home / 21,721.74-29,976.99-16,997.82

Finding the Fourth Proportional to 21,721.74, 29,976.99 and 16,997.82

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Solution

The fourth proportional to 21,721.74, 29,976.99 and 16,997.82 is: 23,457.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,721.74 : 29,976.99 = 16,997.82 : x
  2. Step 2: Convert to fraction form
    21,721.74/29,976.99 = 16,997.82/x
  3. Step 3: Cross multiply
    21,721.74x = 29,976.99 × 16,997.82
  4. Step 4: Simplify right side
    21,721.74x = 509,543,480.16
  5. Step 5: Solve for x
    x = 509,543,480.16/21,721.74
  6. Step 6: Final answer
    x = 23,457.77

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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.