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Finding the Fourth Proportional to 19,325.79, 28,999.62 and 8,231.32

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Solution

The fourth proportional to 19,325.79, 28,999.62 and 8,231.32 is: 12,351.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,325.79 : 28,999.62 = 8,231.32 : x
  2. Step 2: Convert to fraction form
    19,325.79/28,999.62 = 8,231.32/x
  3. Step 3: Cross multiply
    19,325.79x = 28,999.62 × 8,231.32
  4. Step 4: Simplify right side
    19,325.79x = 238,705,188.35
  5. Step 5: Solve for x
    x = 238,705,188.35/19,325.79
  6. Step 6: Final answer
    x = 12,351.64

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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.