Finding the Fourth Proportional to 21,405,924, 29,539,855.68 and 12,586,371.84
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Solution
The fourth proportional to 21,405,924, 29,539,855.68 and 12,586,371.84 is: 17,369,005.31
Step by Step Solution
- Step 1: Write the proportion equation
21,405,924 : 29,539,855.68 = 12,586,371.84 : x - Step 2: Convert to fraction form
21,405,924/29,539,855.68 = 12,586,371.84/x - Step 3: Cross multiply
21,405,924x = 29,539,855.68 × 12,586,371.84 - Step 4: Simplify right side
21,405,924x = 371,799,607,688,416.06 - Step 5: Solve for x
x = 371,799,607,688,416.06/21,405,924 - Step 6: Final answer
x = 17,369,005.31
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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.