Home / 13,290,687-18,341,155.35-7,179,115.50

Finding the Fourth Proportional to 13,290,687, 18,341,155.35 and 7,179,115.50

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Solution

The fourth proportional to 13,290,687, 18,341,155.35 and 7,179,115.50 is: 9,907,183.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290,687 : 18,341,155.35 = 7,179,115.50 : x
  2. Step 2: Convert to fraction form
    13,290,687/18,341,155.35 = 7,179,115.50/x
  3. Step 3: Cross multiply
    13,290,687x = 18,341,155.35 × 7,179,115.50
  4. Step 4: Simplify right side
    13,290,687x = 131,673,272,661,092.94
  5. Step 5: Solve for x
    x = 131,673,272,661,092.94/13,290,687
  6. Step 6: Final answer
    x = 9,907,183.33

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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.