Finding the Fourth Proportional to 15,519,772.36, 21,415,091.70 and 8,813,876.68
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Solution
The fourth proportional to 15,519,772.36, 21,415,091.70 and 8,813,876.68 is: 12,161,903.73
Step by Step Solution
- Step 1: Write the proportion equation
15,519,772.36 : 21,415,091.70 = 8,813,876.68 : x - Step 2: Convert to fraction form
15,519,772.36/21,415,091.70 = 8,813,876.68/x - Step 3: Cross multiply
15,519,772.36x = 21,415,091.70 × 8,813,876.68 - Step 4: Simplify right side
15,519,772.36x = 188,749,977,334,691.53 - Step 5: Solve for x
x = 188,749,977,334,691.53/15,519,772.36 - Step 6: Final answer
x = 12,161,903.73
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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.