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Finding the Fourth Proportional to 18,999.56, 28,502.62 and 8,473.32

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Solution

The fourth proportional to 18,999.56, 28,502.62 and 8,473.32 is: 12,711.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.56 : 28,502.62 = 8,473.32 : x
  2. Step 2: Convert to fraction form
    18,999.56/28,502.62 = 8,473.32/x
  3. Step 3: Cross multiply
    18,999.56x = 28,502.62 × 8,473.32
  4. Step 4: Simplify right side
    18,999.56x = 241,511,820.10
  5. Step 5: Solve for x
    x = 241,511,820.10/18,999.56
  6. Step 6: Final answer
    x = 12,711.44

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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.