Finding the Fourth Proportional to 21,463,911.29, 29,617,509.13 and 14,509,719.74
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Solution
The fourth proportional to 21,463,911.29, 29,617,509.13 and 14,509,719.74 is: 20,021,595.83
Step by Step Solution
- Step 1: Write the proportion equation
21,463,911.29 : 29,617,509.13 = 14,509,719.74 : x - Step 2: Convert to fraction form
21,463,911.29/29,617,509.13 = 14,509,719.74/x - Step 3: Cross multiply
21,463,911.29x = 29,617,509.13 × 14,509,719.74 - Step 4: Simplify right side
21,463,911.29x = 429,741,756,910,960.69 - Step 5: Solve for x
x = 429,741,756,910,960.69/21,463,911.29 - Step 6: Final answer
x = 20,021,595.83
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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.