Home / 36,687.90-55,007.55-13,311.30

Finding the Fourth Proportional to 36,687.90, 55,007.55 and 13,311.30

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Solution

The fourth proportional to 36,687.90, 55,007.55 and 13,311.30 is: 19,958.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,687.90 : 55,007.55 = 13,311.30 : x
  2. Step 2: Convert to fraction form
    36,687.90/55,007.55 = 13,311.30/x
  3. Step 3: Cross multiply
    36,687.90x = 55,007.55 × 13,311.30
  4. Step 4: Simplify right side
    36,687.90x = 732,222,000.32
  5. Step 5: Solve for x
    x = 732,222,000.32/36,687.90
  6. Step 6: Final answer
    x = 19,958.13

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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.