Home / 12,194.88-18,290.70-3,430.68

Finding the Fourth Proportional to 12,194.88, 18,290.70 and 3,430.68

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Solution

The fourth proportional to 12,194.88, 18,290.70 and 3,430.68 is: 5,145.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,194.88 : 18,290.70 = 3,430.68 : x
  2. Step 2: Convert to fraction form
    12,194.88/18,290.70 = 3,430.68/x
  3. Step 3: Cross multiply
    12,194.88x = 18,290.70 × 3,430.68
  4. Step 4: Simplify right side
    12,194.88x = 62,749,538.68
  5. Step 5: Solve for x
    x = 62,749,538.68/12,194.88
  6. Step 6: Final answer
    x = 5,145.56

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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.