Home / 13,911.74-20,868.58-5,591.77

Finding the Fourth Proportional to 13,911.74, 20,868.58 and 5,591.77

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Solution

The fourth proportional to 13,911.74, 20,868.58 and 5,591.77 is: 8,388.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,911.74 : 20,868.58 = 5,591.77 : x
  2. Step 2: Convert to fraction form
    13,911.74/20,868.58 = 5,591.77/x
  3. Step 3: Cross multiply
    13,911.74x = 20,868.58 × 5,591.77
  4. Step 4: Simplify right side
    13,911.74x = 116,692,233.44
  5. Step 5: Solve for x
    x = 116,692,233.44/13,911.74
  6. Step 6: Final answer
    x = 8,388.04

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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.