Finding the Fourth Proportional to 21,470,510.40, 29,629,539.36 and 11,681,010.24
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Solution
The fourth proportional to 21,470,510.40, 29,629,539.36 and 11,681,010.24 is: 16,119,921.99
Step by Step Solution
- Step 1: Write the proportion equation
21,470,510.40 : 29,629,539.36 = 11,681,010.24 : x - Step 2: Convert to fraction form
21,470,510.40/29,629,539.36 = 11,681,010.24/x - Step 3: Cross multiply
21,470,510.40x = 29,629,539.36 × 11,681,010.24 - Step 4: Simplify right side
21,470,510.40x = 346,102,952,670,643.06 - Step 5: Solve for x
x = 346,102,952,670,643.06/21,470,510.40 - Step 6: Final answer
x = 16,119,921.99
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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.