Home / 19,231.12-28,861.80-8,837.20

Finding the Fourth Proportional to 19,231.12, 28,861.80 and 8,837.20

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Solution

The fourth proportional to 19,231.12, 28,861.80 and 8,837.20 is: 13,262.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,231.12 : 28,861.80 = 8,837.20 : x
  2. Step 2: Convert to fraction form
    19,231.12/28,861.80 = 8,837.20/x
  3. Step 3: Cross multiply
    19,231.12x = 28,861.80 × 8,837.20
  4. Step 4: Simplify right side
    19,231.12x = 255,057,498.96
  5. Step 5: Solve for x
    x = 255,057,498.96/19,231.12
  6. Step 6: Final answer
    x = 13,262.75

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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.