Home / 13,830.78-20,738.88-5,510.46

Finding the Fourth Proportional to 13,830.78, 20,738.88 and 5,510.46

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Solution

The fourth proportional to 13,830.78, 20,738.88 and 5,510.46 is: 8,262.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.78 : 20,738.88 = 5,510.46 : x
  2. Step 2: Convert to fraction form
    13,830.78/20,738.88 = 5,510.46/x
  3. Step 3: Cross multiply
    13,830.78x = 20,738.88 × 5,510.46
  4. Step 4: Simplify right side
    13,830.78x = 114,280,768.68
  5. Step 5: Solve for x
    x = 114,280,768.68/13,830.78
  6. Step 6: Final answer
    x = 8,262.79

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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.