Home / 28,886,633.30-39,796,556.81-20,171,000.90

Finding the Fourth Proportional to 28,886,633.30, 39,796,556.81 and 20,171,000.90

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Solution

The fourth proportional to 28,886,633.30, 39,796,556.81 and 20,171,000.90 is: 27,789,198.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,886,633.30 : 39,796,556.81 = 20,171,000.90 : x
  2. Step 2: Convert to fraction form
    28,886,633.30/39,796,556.81 = 20,171,000.90/x
  3. Step 3: Cross multiply
    28,886,633.30x = 39,796,556.81 × 20,171,000.90
  4. Step 4: Simplify right side
    28,886,633.30x = 802,736,383,230,047.50
  5. Step 5: Solve for x
    x = 802,736,383,230,047.50/28,886,633.30
  6. Step 6: Final answer
    x = 27,789,198.38

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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.