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Finding the Fourth Proportional to 18,800.82, 28,203.93 and 6,318.18

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Solution

The fourth proportional to 18,800.82, 28,203.93 and 6,318.18 is: 9,478.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,800.82 : 28,203.93 = 6,318.18 : x
  2. Step 2: Convert to fraction form
    18,800.82/28,203.93 = 6,318.18/x
  3. Step 3: Cross multiply
    18,800.82x = 28,203.93 × 6,318.18
  4. Step 4: Simplify right side
    18,800.82x = 178,197,506.45
  5. Step 5: Solve for x
    x = 178,197,506.45/18,800.82
  6. Step 6: Final answer
    x = 9,478.18

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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.