Home / 12,147.16-18,208.56-4,243.54

Finding the Fourth Proportional to 12,147.16, 18,208.56 and 4,243.54

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Solution

The fourth proportional to 12,147.16, 18,208.56 and 4,243.54 is: 6,361.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.16 : 18,208.56 = 4,243.54 : x
  2. Step 2: Convert to fraction form
    12,147.16/18,208.56 = 4,243.54/x
  3. Step 3: Cross multiply
    12,147.16x = 18,208.56 × 4,243.54
  4. Step 4: Simplify right side
    12,147.16x = 77,268,752.70
  5. Step 5: Solve for x
    x = 77,268,752.70/12,147.16
  6. Step 6: Final answer
    x = 6,361.05

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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.