Home / 13,311.61-18,364.20-8,768.42

Finding the Fourth Proportional to 13,311.61, 18,364.20 and 8,768.42

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Solution

The fourth proportional to 13,311.61, 18,364.20 and 8,768.42 is: 12,096.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.61 : 18,364.20 = 8,768.42 : x
  2. Step 2: Convert to fraction form
    13,311.61/18,364.20 = 8,768.42/x
  3. Step 3: Cross multiply
    13,311.61x = 18,364.20 × 8,768.42
  4. Step 4: Simplify right side
    13,311.61x = 161,025,012.05
  5. Step 5: Solve for x
    x = 161,025,012.05/13,311.61
  6. Step 6: Final answer
    x = 12,096.59

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1.5x scale

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.