Finding the Fourth Proportional to 20,689,855.01, 31,035,914.30 and 8,391,991.96
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Solution
The fourth proportional to 20,689,855.01, 31,035,914.30 and 8,391,991.96 is: 12,588,447.00
Step by Step Solution
- Step 1: Write the proportion equation
20,689,855.01 : 31,035,914.30 = 8,391,991.96 : x - Step 2: Convert to fraction form
20,689,855.01/31,035,914.30 = 8,391,991.96/x - Step 3: Cross multiply
20,689,855.01x = 31,035,914.30 × 8,391,991.96 - Step 4: Simplify right side
20,689,855.01x = 260,453,143,276,849.06 - Step 5: Solve for x
x = 260,453,143,276,849.06/20,689,855.01 - Step 6: Final answer
x = 12,588,447.00
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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.