Finding the Fourth Proportional to 19,869,277.80, 29,803,916.70 and 18,693,546.60
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Solution
The fourth proportional to 19,869,277.80, 29,803,916.70 and 18,693,546.60 is: 28,040,319.90
Step by Step Solution
- Step 1: Write the proportion equation
19,869,277.80 : 29,803,916.70 = 18,693,546.60 : x - Step 2: Convert to fraction form
19,869,277.80/29,803,916.70 = 18,693,546.60/x - Step 3: Cross multiply
19,869,277.80x = 29,803,916.70 × 18,693,546.60 - Step 4: Simplify right side
19,869,277.80x = 557,140,905,693,968.25 - Step 5: Solve for x
x = 557,140,905,693,968.25/19,869,277.80 - Step 6: Final answer
x = 28,040,319.90
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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.