Home / 20,055.12-27,675.36-11,102.64

Finding the Fourth Proportional to 20,055.12, 27,675.36 and 11,102.64

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Solution

The fourth proportional to 20,055.12, 27,675.36 and 11,102.64 is: 15,321.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,055.12 : 27,675.36 = 11,102.64 : x
  2. Step 2: Convert to fraction form
    20,055.12/27,675.36 = 11,102.64/x
  3. Step 3: Cross multiply
    20,055.12x = 27,675.36 × 11,102.64
  4. Step 4: Simplify right side
    20,055.12x = 307,269,558.95
  5. Step 5: Solve for x
    x = 307,269,558.95/20,055.12
  6. Step 6: Final answer
    x = 15,321.25

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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.