Home / 15,311,373.87-21,129,684.39-8,435,855.94

Finding the Fourth Proportional to 15,311,373.87, 21,129,684.39 and 8,435,855.94

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Solution

The fourth proportional to 15,311,373.87, 21,129,684.39 and 8,435,855.94 is: 11,641,474.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311,373.87 : 21,129,684.39 = 8,435,855.94 : x
  2. Step 2: Convert to fraction form
    15,311,373.87/21,129,684.39 = 8,435,855.94/x
  3. Step 3: Cross multiply
    15,311,373.87x = 21,129,684.39 × 8,435,855.94
  4. Step 4: Simplify right side
    15,311,373.87x = 178,246,973,571,706.78
  5. Step 5: Solve for x
    x = 178,246,973,571,706.78/15,311,373.87
  6. Step 6: Final answer
    x = 11,641,474.83

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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.