Home / 20,102.21-27,739.08-11,149.52

Finding the Fourth Proportional to 20,102.21, 27,739.08 and 11,149.52

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Solution

The fourth proportional to 20,102.21, 27,739.08 and 11,149.52 is: 15,385.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.21 : 27,739.08 = 11,149.52 : x
  2. Step 2: Convert to fraction form
    20,102.21/27,739.08 = 11,149.52/x
  3. Step 3: Cross multiply
    20,102.21x = 27,739.08 × 11,149.52
  4. Step 4: Simplify right side
    20,102.21x = 309,277,427.24
  5. Step 5: Solve for x
    x = 309,277,427.24/20,102.21
  6. Step 6: Final answer
    x = 15,385.25

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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.