Home / 12,005.55-18,004.48-3,998.60

Finding the Fourth Proportional to 12,005.55, 18,004.48 and 3,998.60

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Solution

The fourth proportional to 12,005.55, 18,004.48 and 3,998.60 is: 5,996.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,005.55 : 18,004.48 = 3,998.60 : x
  2. Step 2: Convert to fraction form
    12,005.55/18,004.48 = 3,998.60/x
  3. Step 3: Cross multiply
    12,005.55x = 18,004.48 × 3,998.60
  4. Step 4: Simplify right side
    12,005.55x = 71,992,681.23
  5. Step 5: Solve for x
    x = 71,992,681.23/12,005.55
  6. Step 6: Final answer
    x = 5,996.62

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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.