Home / 20,986.05-31,482.50-6,196.47

Finding the Fourth Proportional to 20,986.05, 31,482.50 and 6,196.47

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Solution

The fourth proportional to 20,986.05, 31,482.50 and 6,196.47 is: 9,295.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986.05 : 31,482.50 = 6,196.47 : x
  2. Step 2: Convert to fraction form
    20,986.05/31,482.50 = 6,196.47/x
  3. Step 3: Cross multiply
    20,986.05x = 31,482.50 × 6,196.47
  4. Step 4: Simplify right side
    20,986.05x = 195,080,193.87
  5. Step 5: Solve for x
    x = 195,080,193.87/20,986.05
  6. Step 6: Final answer
    x = 9,295.71

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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.