Home / 20,913.17-31,370.45-7,579.44

Finding the Fourth Proportional to 20,913.17, 31,370.45 and 7,579.44

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Solution

The fourth proportional to 20,913.17, 31,370.45 and 7,579.44 is: 11,369.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913.17 : 31,370.45 = 7,579.44 : x
  2. Step 2: Convert to fraction form
    20,913.17/31,370.45 = 7,579.44/x
  3. Step 3: Cross multiply
    20,913.17x = 31,370.45 × 7,579.44
  4. Step 4: Simplify right side
    20,913.17x = 237,770,405.65
  5. Step 5: Solve for x
    x = 237,770,405.65/20,913.17
  6. Step 6: Final answer
    x = 11,369.41

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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.