Home / 11,420.79-17,131.18-3,629.60

Finding the Fourth Proportional to 11,420.79, 17,131.18 and 3,629.60

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Solution

The fourth proportional to 11,420.79, 17,131.18 and 3,629.60 is: 5,444.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.79 : 17,131.18 = 3,629.60 : x
  2. Step 2: Convert to fraction form
    11,420.79/17,131.18 = 3,629.60/x
  3. Step 3: Cross multiply
    11,420.79x = 17,131.18 × 3,629.60
  4. Step 4: Simplify right side
    11,420.79x = 62,179,330.93
  5. Step 5: Solve for x
    x = 62,179,330.93/11,420.79
  6. Step 6: Final answer
    x = 5,444.40

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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.