Home / 12,074.61-18,111.91-3,309.60

Finding the Fourth Proportional to 12,074.61, 18,111.91 and 3,309.60

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Solution

The fourth proportional to 12,074.61, 18,111.91 and 3,309.60 is: 4,964.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,074.61 : 18,111.91 = 3,309.60 : x
  2. Step 2: Convert to fraction form
    12,074.61/18,111.91 = 3,309.60/x
  3. Step 3: Cross multiply
    12,074.61x = 18,111.91 × 3,309.60
  4. Step 4: Simplify right side
    12,074.61x = 59,943,177.34
  5. Step 5: Solve for x
    x = 59,943,177.34/12,074.61
  6. Step 6: Final answer
    x = 4,964.40

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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.