Home / 20,699.75-31,054.21-7,552.08

Finding the Fourth Proportional to 20,699.75, 31,054.21 and 7,552.08

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Solution

The fourth proportional to 20,699.75, 31,054.21 and 7,552.08 is: 11,329.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.75 : 31,054.21 = 7,552.08 : x
  2. Step 2: Convert to fraction form
    20,699.75/31,054.21 = 7,552.08/x
  3. Step 3: Cross multiply
    20,699.75x = 31,054.21 × 7,552.08
  4. Step 4: Simplify right side
    20,699.75x = 234,523,859.38
  5. Step 5: Solve for x
    x = 234,523,859.38/20,699.75
  6. Step 6: Final answer
    x = 11,329.79

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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.