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Finding the Fourth Proportional to 29,491.88, 40,670.37 and 19,407.78

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Solution

The fourth proportional to 29,491.88, 40,670.37 and 19,407.78 is: 26,764.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,491.88 : 40,670.37 = 19,407.78 : x
  2. Step 2: Convert to fraction form
    29,491.88/40,670.37 = 19,407.78/x
  3. Step 3: Cross multiply
    29,491.88x = 40,670.37 × 19,407.78
  4. Step 4: Simplify right side
    29,491.88x = 789,321,593.48
  5. Step 5: Solve for x
    x = 789,321,593.48/29,491.88
  6. Step 6: Final answer
    x = 26,764.04

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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.