Home / 21,717.06-29,976.63-12,764.34

Finding the Fourth Proportional to 21,717.06, 29,976.63 and 12,764.34

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Solution

The fourth proportional to 21,717.06, 29,976.63 and 12,764.34 is: 17,618.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,717.06 : 29,976.63 = 12,764.34 : x
  2. Step 2: Convert to fraction form
    21,717.06/29,976.63 = 12,764.34/x
  3. Step 3: Cross multiply
    21,717.06x = 29,976.63 × 12,764.34
  4. Step 4: Simplify right side
    21,717.06x = 382,631,897.37
  5. Step 5: Solve for x
    x = 382,631,897.37/21,717.06
  6. Step 6: Final answer
    x = 17,618.95

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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.