Finding the Fourth Proportional to 21,425,926.75, 29,569,602.42 and 12,135,149.53
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Solution
The fourth proportional to 21,425,926.75, 29,569,602.42 and 12,135,149.53 is: 16,747,539.14
Step by Step Solution
- Step 1: Write the proportion equation
21,425,926.75 : 29,569,602.42 = 12,135,149.53 : x - Step 2: Convert to fraction form
21,425,926.75/29,569,602.42 = 12,135,149.53/x - Step 3: Cross multiply
21,425,926.75x = 29,569,602.42 × 12,135,149.53 - Step 4: Simplify right side
21,425,926.75x = 358,831,546,835,425.88 - Step 5: Solve for x
x = 358,831,546,835,425.88/21,425,926.75 - Step 6: Final answer
x = 16,747,539.14
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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.