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Finding the Fourth Proportional to 18,793,003.20, 28,168,509.60 and 8,008,468.80

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Solution

The fourth proportional to 18,793,003.20, 28,168,509.60 and 8,008,468.80 is: 12,003,756.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793,003.20 : 28,168,509.60 = 8,008,468.80 : x
  2. Step 2: Convert to fraction form
    18,793,003.20/28,168,509.60 = 8,008,468.80/x
  3. Step 3: Cross multiply
    18,793,003.20x = 28,168,509.60 × 8,008,468.80
  4. Step 4: Simplify right side
    18,793,003.20x = 225,586,630,274,100.50
  5. Step 5: Solve for x
    x = 225,586,630,274,100.50/18,793,003.20
  6. Step 6: Final answer
    x = 12,003,756.28

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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.