Home / 20,147.04-30,218.40-12,342.24

Finding the Fourth Proportional to 20,147.04, 30,218.40 and 12,342.24

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Solution

The fourth proportional to 20,147.04, 30,218.40 and 12,342.24 is: 18,512.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.04 : 30,218.40 = 12,342.24 : x
  2. Step 2: Convert to fraction form
    20,147.04/30,218.40 = 12,342.24/x
  3. Step 3: Cross multiply
    20,147.04x = 30,218.40 × 12,342.24
  4. Step 4: Simplify right side
    20,147.04x = 372,962,745.22
  5. Step 5: Solve for x
    x = 372,962,745.22/20,147.04
  6. Step 6: Final answer
    x = 18,512.04

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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.