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Finding the Fourth Proportional to 18,989.96, 28,483.02 and 6,677

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Solution

The fourth proportional to 18,989.96, 28,483.02 and 6,677 is: 10,014.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.96 : 28,483.02 = 6,677 : x
  2. Step 2: Convert to fraction form
    18,989.96/28,483.02 = 6,677/x
  3. Step 3: Cross multiply
    18,989.96x = 28,483.02 × 6,677
  4. Step 4: Simplify right side
    18,989.96x = 190,181,124.54
  5. Step 5: Solve for x
    x = 190,181,124.54/18,989.96
  6. Step 6: Final answer
    x = 10,014.82

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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.