Finding the Fourth Proportional to 21,283,138.24, 29,369,058.24 and 11,990,298.40
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Solution
The fourth proportional to 21,283,138.24, 29,369,058.24 and 11,990,298.40 is: 16,545,669.54
Step by Step Solution
- Step 1: Write the proportion equation
21,283,138.24 : 29,369,058.24 = 11,990,298.40 : x - Step 2: Convert to fraction form
21,283,138.24/29,369,058.24 = 11,990,298.40/x - Step 3: Cross multiply
21,283,138.24x = 29,369,058.24 × 11,990,298.40 - Step 4: Simplify right side
21,283,138.24x = 352,143,772,024,578.81 - Step 5: Solve for x
x = 352,143,772,024,578.81/21,283,138.24 - Step 6: Final answer
x = 16,545,669.54
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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.