Home / 12,131.96-16,745.27-7,420.19

Finding the Fourth Proportional to 12,131.96, 16,745.27 and 7,420.19

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Solution

The fourth proportional to 12,131.96, 16,745.27 and 7,420.19 is: 10,241.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131.96 : 16,745.27 = 7,420.19 : x
  2. Step 2: Convert to fraction form
    12,131.96/16,745.27 = 7,420.19/x
  3. Step 3: Cross multiply
    12,131.96x = 16,745.27 × 7,420.19
  4. Step 4: Simplify right side
    12,131.96x = 124,252,964.17
  5. Step 5: Solve for x
    x = 124,252,964.17/12,131.96
  6. Step 6: Final answer
    x = 10,241.79

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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.