Finding the Fourth Proportional to 21,397,472.84, 29,528,512.46 and 12,230,312.42
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Solution
The fourth proportional to 21,397,472.84, 29,528,512.46 and 12,230,312.42 is: 16,877,831.11
Step by Step Solution
- Step 1: Write the proportion equation
21,397,472.84 : 29,528,512.46 = 12,230,312.42 : x - Step 2: Convert to fraction form
21,397,472.84/29,528,512.46 = 12,230,312.42/x - Step 3: Cross multiply
21,397,472.84x = 29,528,512.46 × 12,230,312.42 - Step 4: Simplify right side
21,397,472.84x = 361,142,932,683,662.75 - Step 5: Solve for x
x = 361,142,932,683,662.75/21,397,472.84 - Step 6: Final answer
x = 16,877,831.11
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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.