Home / 12,125.26-18,187.81-3,119.36

Finding the Fourth Proportional to 12,125.26, 18,187.81 and 3,119.36

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Solution

The fourth proportional to 12,125.26, 18,187.81 and 3,119.36 is: 4,679.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.26 : 18,187.81 = 3,119.36 : x
  2. Step 2: Convert to fraction form
    12,125.26/18,187.81 = 3,119.36/x
  3. Step 3: Cross multiply
    12,125.26x = 18,187.81 × 3,119.36
  4. Step 4: Simplify right side
    12,125.26x = 56,734,327.00
  5. Step 5: Solve for x
    x = 56,734,327.00/12,125.26
  6. Step 6: Final answer
    x = 4,679.02

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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.