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Finding the Fourth Proportional to 17,940.80, 26,900.40 and 9,192.80

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Solution

The fourth proportional to 17,940.80, 26,900.40 and 9,192.80 is: 13,783.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,940.80 : 26,900.40 = 9,192.80 : x
  2. Step 2: Convert to fraction form
    17,940.80/26,900.40 = 9,192.80/x
  3. Step 3: Cross multiply
    17,940.80x = 26,900.40 × 9,192.80
  4. Step 4: Simplify right side
    17,940.80x = 247,289,997.12
  5. Step 5: Solve for x
    x = 247,289,997.12/17,940.80
  6. Step 6: Final answer
    x = 13,783.67

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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.