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Finding the Fourth Proportional to 18,677, 28,005.60 and 5,527.56

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Solution

The fourth proportional to 18,677, 28,005.60 and 5,527.56 is: 8,288.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,677 : 28,005.60 = 5,527.56 : x
  2. Step 2: Convert to fraction form
    18,677/28,005.60 = 5,527.56/x
  3. Step 3: Cross multiply
    18,677x = 28,005.60 × 5,527.56
  4. Step 4: Simplify right side
    18,677x = 154,802,634.34
  5. Step 5: Solve for x
    x = 154,802,634.34/18,677
  6. Step 6: Final answer
    x = 8,288.41

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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.