Home / 12,087.82-18,121.20-9,743.68

Finding the Fourth Proportional to 12,087.82, 18,121.20 and 9,743.68

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Solution

The fourth proportional to 12,087.82, 18,121.20 and 9,743.68 is: 14,607.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.82 : 18,121.20 = 9,743.68 : x
  2. Step 2: Convert to fraction form
    12,087.82/18,121.20 = 9,743.68/x
  3. Step 3: Cross multiply
    12,087.82x = 18,121.20 × 9,743.68
  4. Step 4: Simplify right side
    12,087.82x = 176,567,174.02
  5. Step 5: Solve for x
    x = 176,567,174.02/12,087.82
  6. Step 6: Final answer
    x = 14,607.03

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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.