Home / 12,633.79-18,942.57-5,243.35

Finding the Fourth Proportional to 12,633.79, 18,942.57 and 5,243.35

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Solution

The fourth proportional to 12,633.79, 18,942.57 and 5,243.35 is: 7,861.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,633.79 : 18,942.57 = 5,243.35 : x
  2. Step 2: Convert to fraction form
    12,633.79/18,942.57 = 5,243.35/x
  3. Step 3: Cross multiply
    12,633.79x = 18,942.57 × 5,243.35
  4. Step 4: Simplify right side
    12,633.79x = 99,322,429.70
  5. Step 5: Solve for x
    x = 99,322,429.70/12,633.79
  6. Step 6: Final answer
    x = 7,861.65

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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.