Home / 20,554.84-30,831.18-5,764.78

Finding the Fourth Proportional to 20,554.84, 30,831.18 and 5,764.78

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Solution

The fourth proportional to 20,554.84, 30,831.18 and 5,764.78 is: 8,646.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,554.84 : 30,831.18 = 5,764.78 : x
  2. Step 2: Convert to fraction form
    20,554.84/30,831.18 = 5,764.78/x
  3. Step 3: Cross multiply
    20,554.84x = 30,831.18 × 5,764.78
  4. Step 4: Simplify right side
    20,554.84x = 177,734,969.84
  5. Step 5: Solve for x
    x = 177,734,969.84/20,554.84
  6. Step 6: Final answer
    x = 8,646.87

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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.