Home / 11,887.08-17,830.62-3,121.98

Finding the Fourth Proportional to 11,887.08, 17,830.62 and 3,121.98

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Solution

The fourth proportional to 11,887.08, 17,830.62 and 3,121.98 is: 4,682.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,887.08 : 17,830.62 = 3,121.98 : x
  2. Step 2: Convert to fraction form
    11,887.08/17,830.62 = 3,121.98/x
  3. Step 3: Cross multiply
    11,887.08x = 17,830.62 × 3,121.98
  4. Step 4: Simplify right side
    11,887.08x = 55,666,839.03
  5. Step 5: Solve for x
    x = 55,666,839.03/11,887.08
  6. Step 6: Final answer
    x = 4,682.97

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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.