Home / 12,009.89-18,017.46-3,690.50

Finding the Fourth Proportional to 12,009.89, 18,017.46 and 3,690.50

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Solution

The fourth proportional to 12,009.89, 18,017.46 and 3,690.50 is: 5,536.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,009.89 : 18,017.46 = 3,690.50 : x
  2. Step 2: Convert to fraction form
    12,009.89/18,017.46 = 3,690.50/x
  3. Step 3: Cross multiply
    12,009.89x = 18,017.46 × 3,690.50
  4. Step 4: Simplify right side
    12,009.89x = 66,493,436.13
  5. Step 5: Solve for x
    x = 66,493,436.13/12,009.89
  6. Step 6: Final answer
    x = 5,536.56

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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.