Finding the Fourth Proportional to 21,640,929.72, 29,864,118.06 and 11,982,930.36
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Solution
The fourth proportional to 21,640,929.72, 29,864,118.06 and 11,982,930.36 is: 16,536,241.82
Step by Step Solution
- Step 1: Write the proportion equation
21,640,929.72 : 29,864,118.06 = 11,982,930.36 : x - Step 2: Convert to fraction form
21,640,929.72/29,864,118.06 = 11,982,930.36/x - Step 3: Cross multiply
21,640,929.72x = 29,864,118.06 × 11,982,930.36 - Step 4: Simplify right side
21,640,929.72x = 357,859,646,975,798.25 - Step 5: Solve for x
x = 357,859,646,975,798.25/21,640,929.72 - Step 6: Final answer
x = 16,536,241.82
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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.