Home / 20,831.81-31,250.95-6,977.57

Finding the Fourth Proportional to 20,831.81, 31,250.95 and 6,977.57

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Solution

The fourth proportional to 20,831.81, 31,250.95 and 6,977.57 is: 10,467.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831.81 : 31,250.95 = 6,977.57 : x
  2. Step 2: Convert to fraction form
    20,831.81/31,250.95 = 6,977.57/x
  3. Step 3: Cross multiply
    20,831.81x = 31,250.95 × 6,977.57
  4. Step 4: Simplify right side
    20,831.81x = 218,055,500.05
  5. Step 5: Solve for x
    x = 218,055,500.05/20,831.81
  6. Step 6: Final answer
    x = 10,467.43

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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.