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Finding the Fourth Proportional to 13,604.67, 18,769.62 and 8,891.67

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Solution

The fourth proportional to 13,604.67, 18,769.62 and 8,891.67 is: 12,267.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,604.67 : 18,769.62 = 8,891.67 : x
  2. Step 2: Convert to fraction form
    13,604.67/18,769.62 = 8,891.67/x
  3. Step 3: Cross multiply
    13,604.67x = 18,769.62 × 8,891.67
  4. Step 4: Simplify right side
    13,604.67x = 166,893,267.07
  5. Step 5: Solve for x
    x = 166,893,267.07/13,604.67
  6. Step 6: Final answer
    x = 12,267.35

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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.