Finding the Fourth Proportional to 20,497,437.57, 28,285,486.65 and 11,205,486.93
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Solution
The fourth proportional to 20,497,437.57, 28,285,486.65 and 11,205,486.93 is: 15,463,037.75
Step by Step Solution
- Step 1: Write the proportion equation
20,497,437.57 : 28,285,486.65 = 11,205,486.93 : x - Step 2: Convert to fraction form
20,497,437.57/28,285,486.65 = 11,205,486.93/x - Step 3: Cross multiply
20,497,437.57x = 28,285,486.65 × 11,205,486.93 - Step 4: Simplify right side
20,497,437.57x = 316,952,650,965,264.44 - Step 5: Solve for x
x = 316,952,650,965,264.44/20,497,437.57 - Step 6: Final answer
x = 15,463,037.75
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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.