Finding the Fourth Proportional to 28,611,236.67, 39,484,544.88 and 16,390,455.63
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Solution
The fourth proportional to 28,611,236.67, 39,484,544.88 and 16,390,455.63 is: 22,619,423.56
Step by Step Solution
- Step 1: Write the proportion equation
28,611,236.67 : 39,484,544.88 = 16,390,455.63 : x - Step 2: Convert to fraction form
28,611,236.67/39,484,544.88 = 16,390,455.63/x - Step 3: Cross multiply
28,611,236.67x = 39,484,544.88 × 16,390,455.63 - Step 4: Simplify right side
28,611,236.67x = 647,169,680,926,383.75 - Step 5: Solve for x
x = 647,169,680,926,383.75/28,611,236.67 - Step 6: Final answer
x = 22,619,423.56
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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.