Home / 12,153.85-18,230.87-3,388.64

Finding the Fourth Proportional to 12,153.85, 18,230.87 and 3,388.64

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Solution

The fourth proportional to 12,153.85, 18,230.87 and 3,388.64 is: 5,082.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,153.85 : 18,230.87 = 3,388.64 : x
  2. Step 2: Convert to fraction form
    12,153.85/18,230.87 = 3,388.64/x
  3. Step 3: Cross multiply
    12,153.85x = 18,230.87 × 3,388.64
  4. Step 4: Simplify right side
    12,153.85x = 61,777,772.63
  5. Step 5: Solve for x
    x = 61,777,772.63/12,153.85
  6. Step 6: Final answer
    x = 5,082.98

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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.