Finding the Fourth Proportional to 21,720,700.11, 29,950,002.73 and 13,869,889.53
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Solution
The fourth proportional to 21,720,700.11, 29,950,002.73 and 13,869,889.53 is: 19,124,762.42
Step by Step Solution
- Step 1: Write the proportion equation
21,720,700.11 : 29,950,002.73 = 13,869,889.53 : x - Step 2: Convert to fraction form
21,720,700.11/29,950,002.73 = 13,869,889.53/x - Step 3: Cross multiply
21,720,700.11x = 29,950,002.73 × 13,869,889.53 - Step 4: Simplify right side
21,720,700.11x = 415,403,229,288,298.38 - Step 5: Solve for x
x = 415,403,229,288,298.38/21,720,700.11 - Step 6: Final answer
x = 19,124,762.42
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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.