Finding the Fourth Proportional to 15,295,401.98, 21,102,900.36 and 8,678,895.92
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Solution
The fourth proportional to 15,295,401.98, 21,102,900.36 and 8,678,895.92 is: 11,974,178.65
Step by Step Solution
- Step 1: Write the proportion equation
15,295,401.98 : 21,102,900.36 = 8,678,895.92 : x - Step 2: Convert to fraction form
15,295,401.98/21,102,900.36 = 8,678,895.92/x - Step 3: Cross multiply
15,295,401.98x = 21,102,900.36 × 8,678,895.92 - Step 4: Simplify right side
15,295,401.98x = 183,149,875,834,570.53 - Step 5: Solve for x
x = 183,149,875,834,570.53/15,295,401.98 - Step 6: Final answer
x = 11,974,178.65
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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.