Home / 28,396,620.90-39,187,347.30-15,343,879.77

Finding the Fourth Proportional to 28,396,620.90, 39,187,347.30 and 15,343,879.77

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Solution

The fourth proportional to 28,396,620.90, 39,187,347.30 and 15,343,879.77 is: 21,174,559.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,396,620.90 : 39,187,347.30 = 15,343,879.77 : x
  2. Step 2: Convert to fraction form
    28,396,620.90/39,187,347.30 = 15,343,879.77/x
  3. Step 3: Cross multiply
    28,396,620.90x = 39,187,347.30 × 15,343,879.77
  4. Step 4: Simplify right side
    28,396,620.90x = 601,285,945,476,434
  5. Step 5: Solve for x
    x = 601,285,945,476,434/28,396,620.90
  6. Step 6: Final answer
    x = 21,174,559.73

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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.