Home / 11,320.30-16,987.07-4,745.98

Finding the Fourth Proportional to 11,320.30, 16,987.07 and 4,745.98

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Solution

The fourth proportional to 11,320.30, 16,987.07 and 4,745.98 is: 7,121.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,320.30 : 16,987.07 = 4,745.98 : x
  2. Step 2: Convert to fraction form
    11,320.30/16,987.07 = 4,745.98/x
  3. Step 3: Cross multiply
    11,320.30x = 16,987.07 × 4,745.98
  4. Step 4: Simplify right side
    11,320.30x = 80,620,294.48
  5. Step 5: Solve for x
    x = 80,620,294.48/11,320.30
  6. Step 6: Final answer
    x = 7,121.75

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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.