Finding the Fourth Proportional to 21,287,251.36, 29,367,702.48 and 15,718,840.48
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Solution
The fourth proportional to 21,287,251.36, 29,367,702.48 and 15,718,840.48 is: 21,685,572.40
Step by Step Solution
- Step 1: Write the proportion equation
21,287,251.36 : 29,367,702.48 = 15,718,840.48 : x - Step 2: Convert to fraction form
21,287,251.36/29,367,702.48 = 15,718,840.48/x - Step 3: Cross multiply
21,287,251.36x = 29,367,702.48 × 15,718,840.48 - Step 4: Simplify right side
21,287,251.36x = 461,626,230,547,220.44 - Step 5: Solve for x
x = 461,626,230,547,220.44/21,287,251.36 - Step 6: Final answer
x = 21,685,572.40
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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.