Home / 13,271.90-18,311.91-8,550.50

Finding the Fourth Proportional to 13,271.90, 18,311.91 and 8,550.50

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Solution

The fourth proportional to 13,271.90, 18,311.91 and 8,550.50 is: 11,797.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,271.90 : 18,311.91 = 8,550.50 : x
  2. Step 2: Convert to fraction form
    13,271.90/18,311.91 = 8,550.50/x
  3. Step 3: Cross multiply
    13,271.90x = 18,311.91 × 8,550.50
  4. Step 4: Simplify right side
    13,271.90x = 156,575,986.46
  5. Step 5: Solve for x
    x = 156,575,986.46/13,271.90
  6. Step 6: Final answer
    x = 11,797.56

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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.