Home / 31,736.48-43,814.04-21,680

Finding the Fourth Proportional to 31,736.48, 43,814.04 and 21,680

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Solution

The fourth proportional to 31,736.48, 43,814.04 and 21,680 is: 29,930.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,736.48 : 43,814.04 = 21,680 : x
  2. Step 2: Convert to fraction form
    31,736.48/43,814.04 = 21,680/x
  3. Step 3: Cross multiply
    31,736.48x = 43,814.04 × 21,680
  4. Step 4: Simplify right side
    31,736.48x = 949,888,387.20
  5. Step 5: Solve for x
    x = 949,888,387.20/31,736.48
  6. Step 6: Final answer
    x = 29,930.49

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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.