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Finding the Fourth Proportional to 12,608.68, 17,399.83 and 6,943.30

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Solution

The fourth proportional to 12,608.68, 17,399.83 and 6,943.30 is: 9,581.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,608.68 : 17,399.83 = 6,943.30 : x
  2. Step 2: Convert to fraction form
    12,608.68/17,399.83 = 6,943.30/x
  3. Step 3: Cross multiply
    12,608.68x = 17,399.83 × 6,943.30
  4. Step 4: Simplify right side
    12,608.68x = 120,812,239.64
  5. Step 5: Solve for x
    x = 120,812,239.64/12,608.68
  6. Step 6: Final answer
    x = 9,581.67

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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.