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Finding the Fourth Proportional to 35,361.48, 53,040.84 and 11,987.94

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Solution

The fourth proportional to 35,361.48, 53,040.84 and 11,987.94 is: 17,981.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,361.48 : 53,040.84 = 11,987.94 : x
  2. Step 2: Convert to fraction form
    35,361.48/53,040.84 = 11,987.94/x
  3. Step 3: Cross multiply
    35,361.48x = 53,040.84 × 11,987.94
  4. Step 4: Simplify right side
    35,361.48x = 635,850,407.47
  5. Step 5: Solve for x
    x = 635,850,407.47/35,361.48
  6. Step 6: Final answer
    x = 17,981.44

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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.