Home / 20,126.69-27,774.90-11,174.22

Finding the Fourth Proportional to 20,126.69, 27,774.90 and 11,174.22

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Solution

The fourth proportional to 20,126.69, 27,774.90 and 11,174.22 is: 15,420.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.69 : 27,774.90 = 11,174.22 : x
  2. Step 2: Convert to fraction form
    20,126.69/27,774.90 = 11,174.22/x
  3. Step 3: Cross multiply
    20,126.69x = 27,774.90 × 11,174.22
  4. Step 4: Simplify right side
    20,126.69x = 310,362,843.08
  5. Step 5: Solve for x
    x = 310,362,843.08/20,126.69
  6. Step 6: Final answer
    x = 15,420.46

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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.