Home / 15,703.27-21,670.26-8,629.54

Finding the Fourth Proportional to 15,703.27, 21,670.26 and 8,629.54

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Solution

The fourth proportional to 15,703.27, 21,670.26 and 8,629.54 is: 11,908.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,703.27 : 21,670.26 = 8,629.54 : x
  2. Step 2: Convert to fraction form
    15,703.27/21,670.26 = 8,629.54/x
  3. Step 3: Cross multiply
    15,703.27x = 21,670.26 × 8,629.54
  4. Step 4: Simplify right side
    15,703.27x = 187,004,375.48
  5. Step 5: Solve for x
    x = 187,004,375.48/15,703.27
  6. Step 6: Final answer
    x = 11,908.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.