Home / 12,505.07-18,762.78-5,481.45

Finding the Fourth Proportional to 12,505.07, 18,762.78 and 5,481.45

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Solution

The fourth proportional to 12,505.07, 18,762.78 and 5,481.45 is: 8,224.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.07 : 18,762.78 = 5,481.45 : x
  2. Step 2: Convert to fraction form
    12,505.07/18,762.78 = 5,481.45/x
  3. Step 3: Cross multiply
    12,505.07x = 18,762.78 × 5,481.45
  4. Step 4: Simplify right side
    12,505.07x = 102,847,240.43
  5. Step 5: Solve for x
    x = 102,847,240.43/12,505.07
  6. Step 6: Final answer
    x = 8,224.44

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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.