Finding the Fourth Proportional to 15,512,974.29, 21,407,213.81 and 8,892,816.63
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Solution
The fourth proportional to 15,512,974.29, 21,407,213.81 and 8,892,816.63 is: 12,271,690.99
Step by Step Solution
- Step 1: Write the proportion equation
15,512,974.29 : 21,407,213.81 = 8,892,816.63 : x - Step 2: Convert to fraction form
15,512,974.29/21,407,213.81 = 8,892,816.63/x - Step 3: Cross multiply
15,512,974.29x = 21,407,213.81 × 8,892,816.63 - Step 4: Simplify right side
15,512,974.29x = 190,370,426,911,946.56 - Step 5: Solve for x
x = 190,370,426,911,946.56/15,512,974.29 - Step 6: Final answer
x = 12,271,690.99
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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.