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Finding the Fourth Proportional to 14,286.85, 19,715.84 and 8,697.85

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Solution

The fourth proportional to 14,286.85, 19,715.84 and 8,697.85 is: 12,003.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,286.85 : 19,715.84 = 8,697.85 : x
  2. Step 2: Convert to fraction form
    14,286.85/19,715.84 = 8,697.85/x
  3. Step 3: Cross multiply
    14,286.85x = 19,715.84 × 8,697.85
  4. Step 4: Simplify right side
    14,286.85x = 171,485,418.94
  5. Step 5: Solve for x
    x = 171,485,418.94/14,286.85
  6. Step 6: Final answer
    x = 12,003.03

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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.