Finding the Fourth Proportional to 13,718,581.86, 18,930,278.57 and 7,919,231.95
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Solution
The fourth proportional to 13,718,581.86, 18,930,278.57 and 7,919,231.95 is: 10,927,752.47
Step by Step Solution
- Step 1: Write the proportion equation
13,718,581.86 : 18,930,278.57 = 7,919,231.95 : x - Step 2: Convert to fraction form
13,718,581.86/18,930,278.57 = 7,919,231.95/x - Step 3: Cross multiply
13,718,581.86x = 18,930,278.57 × 7,919,231.95 - Step 4: Simplify right side
13,718,581.86x = 149,913,266,873,944.31 - Step 5: Solve for x
x = 149,913,266,873,944.31/13,718,581.86 - Step 6: Final answer
x = 10,927,752.47
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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.