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Finding the Fourth Proportional to 18,671.00, 28,012.66 and 6,828.39

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Solution

The fourth proportional to 18,671.00, 28,012.66 and 6,828.39 is: 10,244.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.00 : 28,012.66 = 6,828.39 : x
  2. Step 2: Convert to fraction form
    18,671.00/28,012.66 = 6,828.39/x
  3. Step 3: Cross multiply
    18,671.00x = 28,012.66 × 6,828.39
  4. Step 4: Simplify right side
    18,671.00x = 191,281,350.35
  5. Step 5: Solve for x
    x = 191,281,350.35/18,671.00
  6. Step 6: Final answer
    x = 10,244.84

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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.