Home / 30,047.28-45,072.05-8,987.60

Finding the Fourth Proportional to 30,047.28, 45,072.05 and 8,987.60

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Solution

The fourth proportional to 30,047.28, 45,072.05 and 8,987.60 is: 13,481.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,047.28 : 45,072.05 = 8,987.60 : x
  2. Step 2: Convert to fraction form
    30,047.28/45,072.05 = 8,987.60/x
  3. Step 3: Cross multiply
    30,047.28x = 45,072.05 × 8,987.60
  4. Step 4: Simplify right side
    30,047.28x = 405,089,286.28
  5. Step 5: Solve for x
    x = 405,089,286.28/30,047.28
  6. Step 6: Final answer
    x = 13,481.73

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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.