Home / 13,928.85-20,868.95-11,603.79

Finding the Fourth Proportional to 13,928.85, 20,868.95 and 11,603.79

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Solution

The fourth proportional to 13,928.85, 20,868.95 and 11,603.79 is: 17,385.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.85 : 20,868.95 = 11,603.79 : x
  2. Step 2: Convert to fraction form
    13,928.85/20,868.95 = 11,603.79/x
  3. Step 3: Cross multiply
    13,928.85x = 20,868.95 × 11,603.79
  4. Step 4: Simplify right side
    13,928.85x = 242,158,855.30
  5. Step 5: Solve for x
    x = 242,158,855.30/13,928.85
  6. Step 6: Final answer
    x = 17,385.42

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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.