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Finding the Fourth Proportional to 19,755.39, 29,643.11 and 10,878

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Solution

The fourth proportional to 19,755.39, 29,643.11 and 10,878 is: 16,322.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,755.39 : 29,643.11 = 10,878 : x
  2. Step 2: Convert to fraction form
    19,755.39/29,643.11 = 10,878/x
  3. Step 3: Cross multiply
    19,755.39x = 29,643.11 × 10,878
  4. Step 4: Simplify right side
    19,755.39x = 322,457,750.58
  5. Step 5: Solve for x
    x = 322,457,750.58/19,755.39
  6. Step 6: Final answer
    x = 16,322.52

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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.