Finding the Fourth Proportional to 20,547,329.32, 28,355,243.70 and 11,845,460.44
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Solution
The fourth proportional to 20,547,329.32, 28,355,243.70 and 11,845,460.44 is: 16,346,694.61
Step by Step Solution
- Step 1: Write the proportion equation
20,547,329.32 : 28,355,243.70 = 11,845,460.44 : x - Step 2: Convert to fraction form
20,547,329.32/28,355,243.70 = 11,845,460.44/x - Step 3: Cross multiply
20,547,329.32x = 28,355,243.70 × 11,845,460.44 - Step 4: Simplify right side
20,547,329.32x = 335,880,917,514,909.19 - Step 5: Solve for x
x = 335,880,917,514,909.19/20,547,329.32 - Step 6: Final answer
x = 16,346,694.61
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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.