Home / 20,066.80-30,090.10-11,749.48

Finding the Fourth Proportional to 20,066.80, 30,090.10 and 11,749.48

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Solution

The fourth proportional to 20,066.80, 30,090.10 and 11,749.48 is: 17,618.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,066.80 : 30,090.10 = 11,749.48 : x
  2. Step 2: Convert to fraction form
    20,066.80/30,090.10 = 11,749.48/x
  3. Step 3: Cross multiply
    20,066.80x = 30,090.10 × 11,749.48
  4. Step 4: Simplify right side
    20,066.80x = 353,543,028.15
  5. Step 5: Solve for x
    x = 353,543,028.15/20,066.80
  6. Step 6: Final answer
    x = 17,618.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.