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Finding the Fourth Proportional to 18,718.66, 28,068.59 and 6,234.29

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Solution

The fourth proportional to 18,718.66, 28,068.59 and 6,234.29 is: 9,348.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.66 : 28,068.59 = 6,234.29 : x
  2. Step 2: Convert to fraction form
    18,718.66/28,068.59 = 6,234.29/x
  3. Step 3: Cross multiply
    18,718.66x = 28,068.59 × 6,234.29
  4. Step 4: Simplify right side
    18,718.66x = 174,987,745.54
  5. Step 5: Solve for x
    x = 174,987,745.54/18,718.66
  6. Step 6: Final answer
    x = 9,348.31

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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.