Finding the Fourth Proportional to 28,611,376.80, 39,484,738.26 and 16,390,595.76
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Solution
The fourth proportional to 28,611,376.80, 39,484,738.26 and 16,390,595.76 is: 22,619,616.95
Step by Step Solution
- Step 1: Write the proportion equation
28,611,376.80 : 39,484,738.26 = 16,390,595.76 : x - Step 2: Convert to fraction form
28,611,376.80/39,484,738.26 = 16,390,595.76/x - Step 3: Cross multiply
28,611,376.80x = 39,484,738.26 × 16,390,595.76 - Step 4: Simplify right side
28,611,376.80x = 647,178,383,509,065.75 - Step 5: Solve for x
x = 647,178,383,509,065.75/28,611,376.80 - Step 6: Final answer
x = 22,619,616.95
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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.