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Finding the Fourth Proportional to 26,649.53, 36,775.04 and 15,311

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Solution

The fourth proportional to 26,649.53, 36,775.04 and 15,311 is: 21,128.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,649.53 : 36,775.04 = 15,311 : x
  2. Step 2: Convert to fraction form
    26,649.53/36,775.04 = 15,311/x
  3. Step 3: Cross multiply
    26,649.53x = 36,775.04 × 15,311
  4. Step 4: Simplify right side
    26,649.53x = 563,062,637.44
  5. Step 5: Solve for x
    x = 563,062,637.44/26,649.53
  6. Step 6: Final answer
    x = 21,128.43

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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.