Home / 12,311.88-18,421.24-7,551.04

Finding the Fourth Proportional to 12,311.88, 18,421.24 and 7,551.04

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Solution

The fourth proportional to 12,311.88, 18,421.24 and 7,551.04 is: 11,297.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,311.88 : 18,421.24 = 7,551.04 : x
  2. Step 2: Convert to fraction form
    12,311.88/18,421.24 = 7,551.04/x
  3. Step 3: Cross multiply
    12,311.88x = 18,421.24 × 7,551.04
  4. Step 4: Simplify right side
    12,311.88x = 139,099,520.09
  5. Step 5: Solve for x
    x = 139,099,520.09/12,311.88
  6. Step 6: Final answer
    x = 11,297.99

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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.