Home / 21,035.64-31,553.44-5,453.26

Finding the Fourth Proportional to 21,035.64, 31,553.44 and 5,453.26

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Solution

The fourth proportional to 21,035.64, 31,553.44 and 5,453.26 is: 8,179.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,035.64 : 31,553.44 = 5,453.26 : x
  2. Step 2: Convert to fraction form
    21,035.64/31,553.44 = 5,453.26/x
  3. Step 3: Cross multiply
    21,035.64x = 31,553.44 × 5,453.26
  4. Step 4: Simplify right side
    21,035.64x = 172,069,112.21
  5. Step 5: Solve for x
    x = 172,069,112.21/21,035.64
  6. Step 6: Final answer
    x = 8,179.88

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1.5x scale

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.