Home / 12,142.51-18,202.96-4,745.29

Finding the Fourth Proportional to 12,142.51, 18,202.96 and 4,745.29

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Solution

The fourth proportional to 12,142.51, 18,202.96 and 4,745.29 is: 7,113.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,142.51 : 18,202.96 = 4,745.29 : x
  2. Step 2: Convert to fraction form
    12,142.51/18,202.96 = 4,745.29/x
  3. Step 3: Cross multiply
    12,142.51x = 18,202.96 × 4,745.29
  4. Step 4: Simplify right side
    12,142.51x = 86,378,331.96
  5. Step 5: Solve for x
    x = 86,378,331.96/12,142.51
  6. Step 6: Final answer
    x = 7,113.71

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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.