Home / 13,513,193.61-18,647,976.70-7,318,189.98

Finding the Fourth Proportional to 13,513,193.61, 18,647,976.70 and 7,318,189.98

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Solution

The fourth proportional to 13,513,193.61, 18,647,976.70 and 7,318,189.98 is: 10,098,977.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513,193.61 : 18,647,976.70 = 7,318,189.98 : x
  2. Step 2: Convert to fraction form
    13,513,193.61/18,647,976.70 = 7,318,189.98/x
  3. Step 3: Cross multiply
    13,513,193.61x = 18,647,976.70 × 7,318,189.98
  4. Step 4: Simplify right side
    13,513,193.61x = 136,469,436,219,932.50
  5. Step 5: Solve for x
    x = 136,469,436,219,932.50/13,513,193.61
  6. Step 6: Final answer
    x = 10,098,977.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.