Home / 21,224.79-31,837.17-5,642.43

Finding the Fourth Proportional to 21,224.79, 31,837.17 and 5,642.43

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Solution

The fourth proportional to 21,224.79, 31,837.17 and 5,642.43 is: 8,463.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,224.79 : 31,837.17 = 5,642.43 : x
  2. Step 2: Convert to fraction form
    21,224.79/31,837.17 = 5,642.43/x
  3. Step 3: Cross multiply
    21,224.79x = 31,837.17 × 5,642.43
  4. Step 4: Simplify right side
    21,224.79x = 179,639,003.12
  5. Step 5: Solve for x
    x = 179,639,003.12/21,224.79
  6. Step 6: Final answer
    x = 8,463.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.