Home / 20,107.41-27,749.09-11,156.65

Finding the Fourth Proportional to 20,107.41, 27,749.09 and 11,156.65

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Solution

The fourth proportional to 20,107.41, 27,749.09 and 11,156.65 is: 15,396.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.41 : 27,749.09 = 11,156.65 : x
  2. Step 2: Convert to fraction form
    20,107.41/27,749.09 = 11,156.65/x
  3. Step 3: Cross multiply
    20,107.41x = 27,749.09 × 11,156.65
  4. Step 4: Simplify right side
    20,107.41x = 309,586,805.74
  5. Step 5: Solve for x
    x = 309,586,805.74/20,107.41
  6. Step 6: Final answer
    x = 15,396.65

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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.