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Finding the Fourth Proportional to 19,999.84, 29,976.66 and 7,511.89

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Solution

The fourth proportional to 19,999.84, 29,976.66 and 7,511.89 is: 11,259.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,999.84 : 29,976.66 = 7,511.89 : x
  2. Step 2: Convert to fraction form
    19,999.84/29,976.66 = 7,511.89/x
  3. Step 3: Cross multiply
    19,999.84x = 29,976.66 × 7,511.89
  4. Step 4: Simplify right side
    19,999.84x = 225,181,332.62
  5. Step 5: Solve for x
    x = 225,181,332.62/19,999.84
  6. Step 6: Final answer
    x = 11,259.16

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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.