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Finding the Fourth Proportional to 29,642.23, 40,908 and 16,899.31

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Solution

The fourth proportional to 29,642.23, 40,908 and 16,899.31 is: 23,322.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,642.23 : 40,908 = 16,899.31 : x
  2. Step 2: Convert to fraction form
    29,642.23/40,908 = 16,899.31/x
  3. Step 3: Cross multiply
    29,642.23x = 40,908 × 16,899.31
  4. Step 4: Simplify right side
    29,642.23x = 691,316,973.48
  5. Step 5: Solve for x
    x = 691,316,973.48/29,642.23
  6. Step 6: Final answer
    x = 23,322.03

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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.