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Finding the Fourth Proportional to 19,888.59, 29,829.21 and 8,039.25

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Solution

The fourth proportional to 19,888.59, 29,829.21 and 8,039.25 is: 12,057.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,888.59 : 29,829.21 = 8,039.25 : x
  2. Step 2: Convert to fraction form
    19,888.59/29,829.21 = 8,039.25/x
  3. Step 3: Cross multiply
    19,888.59x = 29,829.21 × 8,039.25
  4. Step 4: Simplify right side
    19,888.59x = 239,804,476.49
  5. Step 5: Solve for x
    x = 239,804,476.49/19,888.59
  6. Step 6: Final answer
    x = 12,057.39

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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.