Finding the Fourth Proportional to 15,338,959.99, 21,167,750.05 and 8,463,442.39
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Solution
The fourth proportional to 15,338,959.99, 21,167,750.05 and 8,463,442.39 is: 11,679,542.37
Step by Step Solution
- Step 1: Write the proportion equation
15,338,959.99 : 21,167,750.05 = 8,463,442.39 : x - Step 2: Convert to fraction form
15,338,959.99/21,167,750.05 = 8,463,442.39/x - Step 3: Cross multiply
15,338,959.99x = 21,167,750.05 × 8,463,442.39 - Step 4: Simplify right side
15,338,959.99x = 179,152,033,074,094.62 - Step 5: Solve for x
x = 179,152,033,074,094.62/15,338,959.99 - Step 6: Final answer
x = 11,679,542.37
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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.