Home / 19,940.66-29,911.08-5,148.56

Finding the Fourth Proportional to 19,940.66, 29,911.08 and 5,148.56

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Solution

The fourth proportional to 19,940.66, 29,911.08 and 5,148.56 is: 7,722.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.66 : 29,911.08 = 5,148.56 : x
  2. Step 2: Convert to fraction form
    19,940.66/29,911.08 = 5,148.56/x
  3. Step 3: Cross multiply
    19,940.66x = 29,911.08 × 5,148.56
  4. Step 4: Simplify right side
    19,940.66x = 153,998,840.49
  5. Step 5: Solve for x
    x = 153,998,840.49/19,940.66
  6. Step 6: Final answer
    x = 7,722.86

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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.