Home / 13,940.81-19,229.55-8,271.54

Finding the Fourth Proportional to 13,940.81, 19,229.55 and 8,271.54

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Solution

The fourth proportional to 13,940.81, 19,229.55 and 8,271.54 is: 11,409.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.81 : 19,229.55 = 8,271.54 : x
  2. Step 2: Convert to fraction form
    13,940.81/19,229.55 = 8,271.54/x
  3. Step 3: Cross multiply
    13,940.81x = 19,229.55 × 8,271.54
  4. Step 4: Simplify right side
    13,940.81x = 159,057,992.01
  5. Step 5: Solve for x
    x = 159,057,992.01/13,940.81
  6. Step 6: Final answer
    x = 11,409.53

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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.