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Finding the Fourth Proportional to 21,640.88, 32,461.31 and 5,224.88

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Solution

The fourth proportional to 21,640.88, 32,461.31 and 5,224.88 is: 7,837.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,640.88 : 32,461.31 = 5,224.88 : x
  2. Step 2: Convert to fraction form
    21,640.88/32,461.31 = 5,224.88/x
  3. Step 3: Cross multiply
    21,640.88x = 32,461.31 × 5,224.88
  4. Step 4: Simplify right side
    21,640.88x = 169,606,300.15
  5. Step 5: Solve for x
    x = 169,606,300.15/21,640.88
  6. Step 6: Final answer
    x = 7,837.31

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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.