Finding the Fourth Proportional to 19,509,086.40, 29,232,136.80 and 12,307,732.80
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Solution
The fourth proportional to 19,509,086.40, 29,232,136.80 and 12,307,732.80 is: 18,441,731.28
Step by Step Solution
- Step 1: Write the proportion equation
19,509,086.40 : 29,232,136.80 = 12,307,732.80 : x - Step 2: Convert to fraction form
19,509,086.40/29,232,136.80 = 12,307,732.80/x - Step 3: Cross multiply
19,509,086.40x = 29,232,136.80 × 12,307,732.80 - Step 4: Simplify right side
19,509,086.40x = 359,781,328,907,447.06 - Step 5: Solve for x
x = 359,781,328,907,447.06/19,509,086.40 - Step 6: Final answer
x = 18,441,731.28
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.