Home / 11,320.18-16,986.88-4,745.82

Finding the Fourth Proportional to 11,320.18, 16,986.88 and 4,745.82

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Solution

The fourth proportional to 11,320.18, 16,986.88 and 4,745.82 is: 7,121.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,320.18 : 16,986.88 = 4,745.82 : x
  2. Step 2: Convert to fraction form
    11,320.18/16,986.88 = 4,745.82/x
  3. Step 3: Cross multiply
    11,320.18x = 16,986.88 × 4,745.82
  4. Step 4: Simplify right side
    11,320.18x = 80,616,674.84
  5. Step 5: Solve for x
    x = 80,616,674.84/11,320.18
  6. Step 6: Final answer
    x = 7,121.50

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1.5x scale

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.