Home / 20,255.98-27,953.26-11,181.35

Finding the Fourth Proportional to 20,255.98, 27,953.26 and 11,181.35

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Solution

The fourth proportional to 20,255.98, 27,953.26 and 11,181.35 is: 15,430.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.98 : 27,953.26 = 11,181.35 : x
  2. Step 2: Convert to fraction form
    20,255.98/27,953.26 = 11,181.35/x
  3. Step 3: Cross multiply
    20,255.98x = 27,953.26 × 11,181.35
  4. Step 4: Simplify right side
    20,255.98x = 312,555,266.25
  5. Step 5: Solve for x
    x = 312,555,266.25/20,255.98
  6. Step 6: Final answer
    x = 15,430.27

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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.