Home / 20,089.75-27,723.09-11,137.39

Finding the Fourth Proportional to 20,089.75, 27,723.09 and 11,137.39

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Solution

The fourth proportional to 20,089.75, 27,723.09 and 11,137.39 is: 15,369.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,089.75 : 27,723.09 = 11,137.39 : x
  2. Step 2: Convert to fraction form
    20,089.75/27,723.09 = 11,137.39/x
  3. Step 3: Cross multiply
    20,089.75x = 27,723.09 × 11,137.39
  4. Step 4: Simplify right side
    20,089.75x = 308,762,865.34
  5. Step 5: Solve for x
    x = 308,762,865.34/20,089.75
  6. Step 6: Final answer
    x = 15,369.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.