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Finding the Fourth Proportional to 19,100.20, 28,650.30 and 8,003.20

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Solution

The fourth proportional to 19,100.20, 28,650.30 and 8,003.20 is: 12,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,100.20 : 28,650.30 = 8,003.20 : x
  2. Step 2: Convert to fraction form
    19,100.20/28,650.30 = 8,003.20/x
  3. Step 3: Cross multiply
    19,100.20x = 28,650.30 × 8,003.20
  4. Step 4: Simplify right side
    19,100.20x = 229,294,080.96
  5. Step 5: Solve for x
    x = 229,294,080.96/19,100.20
  6. Step 6: Final answer
    x = 12,004.80

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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.