Finding the Fourth Proportional to 15,371,972.79, 21,213,773.58 and 8,403,035.46
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Solution
The fourth proportional to 15,371,972.79, 21,213,773.58 and 8,403,035.46 is: 11,596,435.54
Step by Step Solution
- Step 1: Write the proportion equation
15,371,972.79 : 21,213,773.58 = 8,403,035.46 : x - Step 2: Convert to fraction form
15,371,972.79/21,213,773.58 = 8,403,035.46/x - Step 3: Cross multiply
15,371,972.79x = 21,213,773.58 × 8,403,035.46 - Step 4: Simplify right side
15,371,972.79x = 178,260,091,633,151.16 - Step 5: Solve for x
x = 178,260,091,633,151.16/15,371,972.79 - Step 6: Final answer
x = 11,596,435.54
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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.