Home / 15,012.20-20,739.94-14,292.20

Finding the Fourth Proportional to 15,012.20, 20,739.94 and 14,292.20

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Solution

The fourth proportional to 15,012.20, 20,739.94 and 14,292.20 is: 19,745.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,012.20 : 20,739.94 = 14,292.20 : x
  2. Step 2: Convert to fraction form
    15,012.20/20,739.94 = 14,292.20/x
  3. Step 3: Cross multiply
    15,012.20x = 20,739.94 × 14,292.20
  4. Step 4: Simplify right side
    15,012.20x = 296,419,370.47
  5. Step 5: Solve for x
    x = 296,419,370.47/15,012.20
  6. Step 6: Final answer
    x = 19,745.23

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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.