Finding the Fourth Proportional to 15,853,981.18, 21,877,158.42 and 8,789,763.42
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Solution
The fourth proportional to 15,853,981.18, 21,877,158.42 and 8,789,763.42 is: 12,129,133.03
Step by Step Solution
- Step 1: Write the proportion equation
15,853,981.18 : 21,877,158.42 = 8,789,763.42 : x - Step 2: Convert to fraction form
15,853,981.18/21,877,158.42 = 8,789,763.42/x - Step 3: Cross multiply
15,853,981.18x = 21,877,158.42 × 8,789,763.42 - Step 4: Simplify right side
15,853,981.18x = 192,295,046,813,661 - Step 5: Solve for x
x = 192,295,046,813,661/15,853,981.18 - Step 6: Final answer
x = 12,129,133.03
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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.