Home / 20,822.58-31,231.94-5,831.06

Finding the Fourth Proportional to 20,822.58, 31,231.94 and 5,831.06

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Solution

The fourth proportional to 20,822.58, 31,231.94 and 5,831.06 is: 8,746.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822.58 : 31,231.94 = 5,831.06 : x
  2. Step 2: Convert to fraction form
    20,822.58/31,231.94 = 5,831.06/x
  3. Step 3: Cross multiply
    20,822.58x = 31,231.94 × 5,831.06
  4. Step 4: Simplify right side
    20,822.58x = 182,115,130.74
  5. Step 5: Solve for x
    x = 182,115,130.74/20,822.58
  6. Step 6: Final answer
    x = 8,746.04

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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.