Home / 13,671.62-18,866.30-7,704.50

Finding the Fourth Proportional to 13,671.62, 18,866.30 and 7,704.50

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Solution

The fourth proportional to 13,671.62, 18,866.30 and 7,704.50 is: 10,631.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.62 : 18,866.30 = 7,704.50 : x
  2. Step 2: Convert to fraction form
    13,671.62/18,866.30 = 7,704.50/x
  3. Step 3: Cross multiply
    13,671.62x = 18,866.30 × 7,704.50
  4. Step 4: Simplify right side
    13,671.62x = 145,355,408.35
  5. Step 5: Solve for x
    x = 145,355,408.35/13,671.62
  6. Step 6: Final answer
    x = 10,631.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.