Home / 12,003.21-18,010.62-4,988.61

Finding the Fourth Proportional to 12,003.21, 18,010.62 and 4,988.61

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Solution

The fourth proportional to 12,003.21, 18,010.62 and 4,988.61 is: 7,485.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,003.21 : 18,010.62 = 4,988.61 : x
  2. Step 2: Convert to fraction form
    12,003.21/18,010.62 = 4,988.61/x
  3. Step 3: Cross multiply
    12,003.21x = 18,010.62 × 4,988.61
  4. Step 4: Simplify right side
    12,003.21x = 89,847,959.04
  5. Step 5: Solve for x
    x = 89,847,959.04/12,003.21
  6. Step 6: Final answer
    x = 7,485.33

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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.