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Finding the Fourth Proportional to 19,202.20, 28,803.30 and 18,230.20

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Solution

The fourth proportional to 19,202.20, 28,803.30 and 18,230.20 is: 27,345.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,202.20 : 28,803.30 = 18,230.20 : x
  2. Step 2: Convert to fraction form
    19,202.20/28,803.30 = 18,230.20/x
  3. Step 3: Cross multiply
    19,202.20x = 28,803.30 × 18,230.20
  4. Step 4: Simplify right side
    19,202.20x = 525,089,919.66
  5. Step 5: Solve for x
    x = 525,089,919.66/19,202.20
  6. Step 6: Final answer
    x = 27,345.30

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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.