Home / 12,121.42-18,181.99-4,731.07

Finding the Fourth Proportional to 12,121.42, 18,181.99 and 4,731.07

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Solution

The fourth proportional to 12,121.42, 18,181.99 and 4,731.07 is: 7,096.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.42 : 18,181.99 = 4,731.07 : x
  2. Step 2: Convert to fraction form
    12,121.42/18,181.99 = 4,731.07/x
  3. Step 3: Cross multiply
    12,121.42x = 18,181.99 × 4,731.07
  4. Step 4: Simplify right side
    12,121.42x = 86,020,267.43
  5. Step 5: Solve for x
    x = 86,020,267.43/12,121.42
  6. Step 6: Final answer
    x = 7,096.55

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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.