Finding the Fourth Proportional to 15,490,409.49, 21,377,163.96 and 8,521,266.08
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Solution
The fourth proportional to 15,490,409.49, 21,377,163.96 and 8,521,266.08 is: 11,759,566.61
Step by Step Solution
- Step 1: Write the proportion equation
15,490,409.49 : 21,377,163.96 = 8,521,266.08 : x - Step 2: Convert to fraction form
15,490,409.49/21,377,163.96 = 8,521,266.08/x - Step 3: Cross multiply
15,490,409.49x = 21,377,163.96 × 8,521,266.08 - Step 4: Simplify right side
15,490,409.49x = 182,160,502,138,946.50 - Step 5: Solve for x
x = 182,160,502,138,946.50/15,490,409.49 - Step 6: Final answer
x = 11,759,566.61
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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.