Finding the Fourth Proportional to 21,137,598.24, 29,169,721.20 and 11,479,806.24
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Solution
The fourth proportional to 21,137,598.24, 29,169,721.20 and 11,479,806.24 is: 15,842,043.34
Step by Step Solution
- Step 1: Write the proportion equation
21,137,598.24 : 29,169,721.20 = 11,479,806.24 : x - Step 2: Convert to fraction form
21,137,598.24/29,169,721.20 = 11,479,806.24/x - Step 3: Cross multiply
21,137,598.24x = 29,169,721.20 × 11,479,806.24 - Step 4: Simplify right side
21,137,598.24x = 334,862,747,450,820.31 - Step 5: Solve for x
x = 334,862,747,450,820.31/21,137,598.24 - Step 6: Final answer
x = 15,842,043.34
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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.