Home / 20,795.09-31,204.99-7,656.69

Finding the Fourth Proportional to 20,795.09, 31,204.99 and 7,656.69

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Solution

The fourth proportional to 20,795.09, 31,204.99 and 7,656.69 is: 11,489.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,795.09 : 31,204.99 = 7,656.69 : x
  2. Step 2: Convert to fraction form
    20,795.09/31,204.99 = 7,656.69/x
  3. Step 3: Cross multiply
    20,795.09x = 31,204.99 × 7,656.69
  4. Step 4: Simplify right side
    20,795.09x = 238,926,934.88
  5. Step 5: Solve for x
    x = 238,926,934.88/20,795.09
  6. Step 6: Final answer
    x = 11,489.58

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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.