Home / 20,317.51-30,477.62-7,837.66

Finding the Fourth Proportional to 20,317.51, 30,477.62 and 7,837.66

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Solution

The fourth proportional to 20,317.51, 30,477.62 and 7,837.66 is: 11,757.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.51 : 30,477.62 = 7,837.66 : x
  2. Step 2: Convert to fraction form
    20,317.51/30,477.62 = 7,837.66/x
  3. Step 3: Cross multiply
    20,317.51x = 30,477.62 × 7,837.66
  4. Step 4: Simplify right side
    20,317.51x = 238,873,183.98
  5. Step 5: Solve for x
    x = 238,873,183.98/20,317.51
  6. Step 6: Final answer
    x = 11,757.01

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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.