Finding the Fourth Proportional to 13,289,973.67, 18,340,163.13 and 7,178,402.17
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Solution
The fourth proportional to 13,289,973.67, 18,340,163.13 and 7,178,402.17 is: 9,906,194.71
Step by Step Solution
- Step 1: Write the proportion equation
13,289,973.67 : 18,340,163.13 = 7,178,402.17 : x - Step 2: Convert to fraction form
13,289,973.67/18,340,163.13 = 7,178,402.17/x - Step 3: Cross multiply
13,289,973.67x = 18,340,163.13 × 7,178,402.17 - Step 4: Simplify right side
13,289,973.67x = 131,653,066,810,545.98 - Step 5: Solve for x
x = 131,653,066,810,545.98/13,289,973.67 - Step 6: Final answer
x = 9,906,194.71
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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.