Home / 12,403.56-18,605.49-3,638.66

Finding the Fourth Proportional to 12,403.56, 18,605.49 and 3,638.66

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Solution

The fourth proportional to 12,403.56, 18,605.49 and 3,638.66 is: 5,458.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,403.56 : 18,605.49 = 3,638.66 : x
  2. Step 2: Convert to fraction form
    12,403.56/18,605.49 = 3,638.66/x
  3. Step 3: Cross multiply
    12,403.56x = 18,605.49 × 3,638.66
  4. Step 4: Simplify right side
    12,403.56x = 67,698,959.22
  5. Step 5: Solve for x
    x = 67,698,959.22/12,403.56
  6. Step 6: Final answer
    x = 5,458.03

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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.