Home / 13,431.61-20,147.41-4,197.61

Finding the Fourth Proportional to 13,431.61, 20,147.41 and 4,197.61

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Solution

The fourth proportional to 13,431.61, 20,147.41 and 4,197.61 is: 6,296.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.61 : 20,147.41 = 4,197.61 : x
  2. Step 2: Convert to fraction form
    13,431.61/20,147.41 = 4,197.61/x
  3. Step 3: Cross multiply
    13,431.61x = 20,147.41 × 4,197.61
  4. Step 4: Simplify right side
    13,431.61x = 84,570,969.69
  5. Step 5: Solve for x
    x = 84,570,969.69/13,431.61
  6. Step 6: Final answer
    x = 6,296.41

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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.