Home / 20,831.55-31,250.57-6,977.31

Finding the Fourth Proportional to 20,831.55, 31,250.57 and 6,977.31

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Solution

The fourth proportional to 20,831.55, 31,250.57 and 6,977.31 is: 10,467.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831.55 : 31,250.57 = 6,977.31 : x
  2. Step 2: Convert to fraction form
    20,831.55/31,250.57 = 6,977.31/x
  3. Step 3: Cross multiply
    20,831.55x = 31,250.57 × 6,977.31
  4. Step 4: Simplify right side
    20,831.55x = 218,044,992.69
  5. Step 5: Solve for x
    x = 218,044,992.69/20,831.55
  6. Step 6: Final answer
    x = 10,467.05

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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.