Finding the Fourth Proportional to 21,297,148.05, 29,439,711.98 and 18,996,838.67
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Solution
The fourth proportional to 21,297,148.05, 29,439,711.98 and 18,996,838.67 is: 26,259,922.58
Step by Step Solution
- Step 1: Write the proportion equation
21,297,148.05 : 29,439,711.98 = 18,996,838.67 : x - Step 2: Convert to fraction form
21,297,148.05/29,439,711.98 = 18,996,838.67/x - Step 3: Cross multiply
21,297,148.05x = 29,439,711.98 × 18,996,838.67 - Step 4: Simplify right side
21,297,148.05x = 559,261,459,132,055.69 - Step 5: Solve for x
x = 559,261,459,132,055.69/21,297,148.05 - Step 6: Final answer
x = 26,259,922.58
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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.