Finding the Fourth Proportional to 21,521,887.26, 29,710,807.82 and 14,911,488.40
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Solution
The fourth proportional to 21,521,887.26, 29,710,807.82 and 14,911,488.40 is: 20,585,200.58
Step by Step Solution
- Step 1: Write the proportion equation
21,521,887.26 : 29,710,807.82 = 14,911,488.40 : x - Step 2: Convert to fraction form
21,521,887.26/29,710,807.82 = 14,911,488.40/x - Step 3: Cross multiply
21,521,887.26x = 29,710,807.82 × 14,911,488.40 - Step 4: Simplify right side
21,521,887.26x = 443,032,366,162,559.31 - Step 5: Solve for x
x = 443,032,366,162,559.31/21,521,887.26 - Step 6: Final answer
x = 20,585,200.58
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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.