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Finding the Fourth Proportional to 18,794,512.80, 28,191,769.20 and 6,015,434.40

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Solution

The fourth proportional to 18,794,512.80, 28,191,769.20 and 6,015,434.40 is: 9,023,151.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,794,512.80 : 28,191,769.20 = 6,015,434.40 : x
  2. Step 2: Convert to fraction form
    18,794,512.80/28,191,769.20 = 6,015,434.40/x
  3. Step 3: Cross multiply
    18,794,512.80x = 28,191,769.20 × 6,015,434.40
  4. Step 4: Simplify right side
    18,794,512.80x = 169,585,738,242,540.50
  5. Step 5: Solve for x
    x = 169,585,738,242,540.50/18,794,512.80
  6. Step 6: Final answer
    x = 9,023,151.60

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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.