Home / 20,427.48-30,662.69-18,102.38

Finding the Fourth Proportional to 20,427.48, 30,662.69 and 18,102.38

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Solution

The fourth proportional to 20,427.48, 30,662.69 and 18,102.38 is: 27,172.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.48 : 30,662.69 = 18,102.38 : x
  2. Step 2: Convert to fraction form
    20,427.48/30,662.69 = 18,102.38/x
  3. Step 3: Cross multiply
    20,427.48x = 30,662.69 × 18,102.38
  4. Step 4: Simplify right side
    20,427.48x = 555,067,422.38
  5. Step 5: Solve for x
    x = 555,067,422.38/20,427.48
  6. Step 6: Final answer
    x = 27,172.58

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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.