Home / 21,640.53-29,864.31-12,694.48

Finding the Fourth Proportional to 21,640.53, 29,864.31 and 12,694.48

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Solution

The fourth proportional to 21,640.53, 29,864.31 and 12,694.48 is: 17,518.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,640.53 : 29,864.31 = 12,694.48 : x
  2. Step 2: Convert to fraction form
    21,640.53/29,864.31 = 12,694.48/x
  3. Step 3: Cross multiply
    21,640.53x = 29,864.31 × 12,694.48
  4. Step 4: Simplify right side
    21,640.53x = 379,111,886.01
  5. Step 5: Solve for x
    x = 379,111,886.01/21,640.53
  6. Step 6: Final answer
    x = 17,518.60

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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.