Home / 13,290,698.50-18,341,171.31-7,179,127.06

Finding the Fourth Proportional to 13,290,698.50, 18,341,171.31 and 7,179,127.06

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Solution

The fourth proportional to 13,290,698.50, 18,341,171.31 and 7,179,127.06 is: 9,907,199.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290,698.50 : 18,341,171.31 = 7,179,127.06 : x
  2. Step 2: Convert to fraction form
    13,290,698.50/18,341,171.31 = 7,179,127.06/x
  3. Step 3: Cross multiply
    13,290,698.50x = 18,341,171.31 × 7,179,127.06
  4. Step 4: Simplify right side
    13,290,698.50x = 131,673,599,263,716.62
  5. Step 5: Solve for x
    x = 131,673,599,263,716.62/13,290,698.50
  6. Step 6: Final answer
    x = 9,907,199.33

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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.