Finding the Fourth Proportional to 12,489,210.98, 18,750,811.89 and 7,028,163.84
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Solution
The fourth proportional to 12,489,210.98, 18,750,811.89 and 7,028,163.84 is: 10,551,809.74
Step by Step Solution
- Step 1: Write the proportion equation
12,489,210.98 : 18,750,811.89 = 7,028,163.84 : x - Step 2: Convert to fraction form
12,489,210.98/18,750,811.89 = 7,028,163.84/x - Step 3: Cross multiply
12,489,210.98x = 18,750,811.89 × 7,028,163.84 - Step 4: Simplify right side
12,489,210.98x = 131,783,778,095,940.06 - Step 5: Solve for x
x = 131,783,778,095,940.06/12,489,210.98 - Step 6: Final answer
x = 10,551,809.74
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.