Home / 18,855.12-28,239.62-9,001.34

Finding the Fourth Proportional to 18,855.12, 28,239.62 and 9,001.34

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Solution

The fourth proportional to 18,855.12, 28,239.62 and 9,001.34 is: 13,481.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.12 : 28,239.62 = 9,001.34 : x
  2. Step 2: Convert to fraction form
    18,855.12/28,239.62 = 9,001.34/x
  3. Step 3: Cross multiply
    18,855.12x = 28,239.62 × 9,001.34
  4. Step 4: Simplify right side
    18,855.12x = 254,194,234.89
  5. Step 5: Solve for x
    x = 254,194,234.89/18,855.12
  6. Step 6: Final answer
    x = 13,481.44

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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.