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Finding the Fourth Proportional to 18,813.96, 28,203.28 and 6,325.25

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Solution

The fourth proportional to 18,813.96, 28,203.28 and 6,325.25 is: 9,481.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,813.96 : 28,203.28 = 6,325.25 : x
  2. Step 2: Convert to fraction form
    18,813.96/28,203.28 = 6,325.25/x
  3. Step 3: Cross multiply
    18,813.96x = 28,203.28 × 6,325.25
  4. Step 4: Simplify right side
    18,813.96x = 178,392,710.50
  5. Step 5: Solve for x
    x = 178,392,710.50/18,813.96
  6. Step 6: Final answer
    x = 9,481.94

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1.5x scale

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.