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Finding the Fourth Proportional to 19,005, 28,511.90 and 6,693

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Solution

The fourth proportional to 19,005, 28,511.90 and 6,693 is: 10,041.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,005 : 28,511.90 = 6,693 : x
  2. Step 2: Convert to fraction form
    19,005/28,511.90 = 6,693/x
  3. Step 3: Cross multiply
    19,005x = 28,511.90 × 6,693
  4. Step 4: Simplify right side
    19,005x = 190,830,146.70
  5. Step 5: Solve for x
    x = 190,830,146.70/19,005
  6. Step 6: Final answer
    x = 10,041.05

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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.