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Finding the Fourth Proportional to 19,408,978.20, 29,144,960.10 and 10,905,922.20

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Solution

The fourth proportional to 19,408,978.20, 29,144,960.10 and 10,905,922.20 is: 16,376,579.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,408,978.20 : 29,144,960.10 = 10,905,922.20 : x
  2. Step 2: Convert to fraction form
    19,408,978.20/29,144,960.10 = 10,905,922.20/x
  3. Step 3: Cross multiply
    19,408,978.20x = 29,144,960.10 × 10,905,922.20
  4. Step 4: Simplify right side
    19,408,978.20x = 317,852,667,372,704.19
  5. Step 5: Solve for x
    x = 317,852,667,372,704.19/19,408,978.20
  6. Step 6: Final answer
    x = 16,376,579.13

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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.