Home / 20,814.86-31,222.59-6,774.96

Finding the Fourth Proportional to 20,814.86, 31,222.59 and 6,774.96

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Solution

The fourth proportional to 20,814.86, 31,222.59 and 6,774.96 is: 10,162.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,814.86 : 31,222.59 = 6,774.96 : x
  2. Step 2: Convert to fraction form
    20,814.86/31,222.59 = 6,774.96/x
  3. Step 3: Cross multiply
    20,814.86x = 31,222.59 × 6,774.96
  4. Step 4: Simplify right side
    20,814.86x = 211,531,928.13
  5. Step 5: Solve for x
    x = 211,531,928.13/20,814.86
  6. Step 6: Final answer
    x = 10,162.54

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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.