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Finding the Fourth Proportional to 13,620.69, 18,769.73 and 8,896.77

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Solution

The fourth proportional to 13,620.69, 18,769.73 and 8,896.77 is: 12,260.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.69 : 18,769.73 = 8,896.77 : x
  2. Step 2: Convert to fraction form
    13,620.69/18,769.73 = 8,896.77/x
  3. Step 3: Cross multiply
    13,620.69x = 18,769.73 × 8,896.77
  4. Step 4: Simplify right side
    13,620.69x = 166,989,926.29
  5. Step 5: Solve for x
    x = 166,989,926.29/13,620.69
  6. Step 6: Final answer
    x = 12,260.02

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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.