Home / 30,076.62-45,089.56-18,958.80

Finding the Fourth Proportional to 30,076.62, 45,089.56 and 18,958.80

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Solution

The fourth proportional to 30,076.62, 45,089.56 and 18,958.80 is: 28,422.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,076.62 : 45,089.56 = 18,958.80 : x
  2. Step 2: Convert to fraction form
    30,076.62/45,089.56 = 18,958.80/x
  3. Step 3: Cross multiply
    30,076.62x = 45,089.56 × 18,958.80
  4. Step 4: Simplify right side
    30,076.62x = 854,844,016.10
  5. Step 5: Solve for x
    x = 854,844,016.10/30,076.62
  6. Step 6: Final answer
    x = 28,422.21

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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.