Home / 21,044.37-31,558.32-7,889.57

Finding the Fourth Proportional to 21,044.37, 31,558.32 and 7,889.57

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Solution

The fourth proportional to 21,044.37, 31,558.32 and 7,889.57 is: 11,831.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,044.37 : 31,558.32 = 7,889.57 : x
  2. Step 2: Convert to fraction form
    21,044.37/31,558.32 = 7,889.57/x
  3. Step 3: Cross multiply
    21,044.37x = 31,558.32 × 7,889.57
  4. Step 4: Simplify right side
    21,044.37x = 248,981,574.72
  5. Step 5: Solve for x
    x = 248,981,574.72/21,044.37
  6. Step 6: Final answer
    x = 11,831.27

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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.