Finding the Fourth Proportional to 14,380,465.40, 19,845,471.99 and 7,854,402.72
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Solution
The fourth proportional to 14,380,465.40, 19,845,471.99 and 7,854,402.72 is: 10,839,310.47
Step by Step Solution
- Step 1: Write the proportion equation
14,380,465.40 : 19,845,471.99 = 7,854,402.72 : x - Step 2: Convert to fraction form
14,380,465.40/19,845,471.99 = 7,854,402.72/x - Step 3: Cross multiply
14,380,465.40x = 19,845,471.99 × 7,854,402.72 - Step 4: Simplify right side
14,380,465.40x = 155,874,329,177,939.78 - Step 5: Solve for x
x = 155,874,329,177,939.78/14,380,465.40 - Step 6: Final answer
x = 10,839,310.47
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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.