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Finding the Fourth Proportional to 18,972, 28,465.56 and 9,606.96

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Solution

The fourth proportional to 18,972, 28,465.56 and 9,606.96 is: 14,414.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972 : 28,465.56 = 9,606.96 : x
  2. Step 2: Convert to fraction form
    18,972/28,465.56 = 9,606.96/x
  3. Step 3: Cross multiply
    18,972x = 28,465.56 × 9,606.96
  4. Step 4: Simplify right side
    18,972x = 273,467,496.30
  5. Step 5: Solve for x
    x = 273,467,496.30/18,972
  6. Step 6: Final answer
    x = 14,414.27

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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.