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Finding the Fourth Proportional to 18,738,007.20, 28,107,010.80 and 14,481,230.40

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Solution

The fourth proportional to 18,738,007.20, 28,107,010.80 and 14,481,230.40 is: 21,721,845.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,738,007.20 : 28,107,010.80 = 14,481,230.40 : x
  2. Step 2: Convert to fraction form
    18,738,007.20/28,107,010.80 = 14,481,230.40/x
  3. Step 3: Cross multiply
    18,738,007.20x = 28,107,010.80 × 14,481,230.40
  4. Step 4: Simplify right side
    18,738,007.20x = 407,024,099,250,088.31
  5. Step 5: Solve for x
    x = 407,024,099,250,088.31/18,738,007.20
  6. Step 6: Final answer
    x = 21,721,845.60

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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.