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Finding the Fourth Proportional to 18,680.32, 28,020.48 and 6,368

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Solution

The fourth proportional to 18,680.32, 28,020.48 and 6,368 is: 9,552

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,680.32 : 28,020.48 = 6,368 : x
  2. Step 2: Convert to fraction form
    18,680.32/28,020.48 = 6,368/x
  3. Step 3: Cross multiply
    18,680.32x = 28,020.48 × 6,368
  4. Step 4: Simplify right side
    18,680.32x = 178,434,416.64
  5. Step 5: Solve for x
    x = 178,434,416.64/18,680.32
  6. Step 6: Final answer
    x = 9,552

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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.