Home / 21,200.44-31,801.28-5,618.07

Finding the Fourth Proportional to 21,200.44, 31,801.28 and 5,618.07

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Solution

The fourth proportional to 21,200.44, 31,801.28 and 5,618.07 is: 8,427.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.44 : 31,801.28 = 5,618.07 : x
  2. Step 2: Convert to fraction form
    21,200.44/31,801.28 = 5,618.07/x
  3. Step 3: Cross multiply
    21,200.44x = 31,801.28 × 5,618.07
  4. Step 4: Simplify right side
    21,200.44x = 178,661,817.13
  5. Step 5: Solve for x
    x = 178,661,817.13/21,200.44
  6. Step 6: Final answer
    x = 8,427.27

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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.