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Finding the Fourth Proportional to 13,063.69, 18,035.58 and 7,961.11

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Solution

The fourth proportional to 13,063.69, 18,035.58 and 7,961.11 is: 10,991.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,063.69 : 18,035.58 = 7,961.11 : x
  2. Step 2: Convert to fraction form
    13,063.69/18,035.58 = 7,961.11/x
  3. Step 3: Cross multiply
    13,063.69x = 18,035.58 × 7,961.11
  4. Step 4: Simplify right side
    13,063.69x = 143,583,236.29
  5. Step 5: Solve for x
    x = 143,583,236.29/13,063.69
  6. Step 6: Final answer
    x = 10,991.02

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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.