Finding the Fourth Proportional to 20,067,695.20, 27,695,716.68 and 11,249,528.15
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Solution
The fourth proportional to 20,067,695.20, 27,695,716.68 and 11,249,528.15 is: 15,525,636.67
Step by Step Solution
- Step 1: Write the proportion equation
20,067,695.20 : 27,695,716.68 = 11,249,528.15 : x - Step 2: Convert to fraction form
20,067,695.20/27,695,716.68 = 11,249,528.15/x - Step 3: Cross multiply
20,067,695.20x = 27,695,716.68 × 11,249,528.15 - Step 4: Simplify right side
20,067,695.20x = 311,563,744,370,372.06 - Step 5: Solve for x
x = 311,563,744,370,372.06/20,067,695.20 - Step 6: Final answer
x = 15,525,636.67
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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.