Finding the Fourth Proportional to 19,134,510.80, 28,705,265.40 and 7,776,107.60
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Solution
The fourth proportional to 19,134,510.80, 28,705,265.40 and 7,776,107.60 is: 11,665,583.45
Step by Step Solution
- Step 1: Write the proportion equation
19,134,510.80 : 28,705,265.40 = 7,776,107.60 : x - Step 2: Convert to fraction form
19,134,510.80/28,705,265.40 = 7,776,107.60/x - Step 3: Cross multiply
19,134,510.80x = 28,705,265.40 × 7,776,107.60 - Step 4: Simplify right side
19,134,510.80x = 223,215,232,436,957.03 - Step 5: Solve for x
x = 223,215,232,436,957.03/19,134,510.80 - Step 6: Final answer
x = 11,665,583.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.