Finding the Fourth Proportional to 19,155,702.75, 28,708,602.88 and 7,782,855.63
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Solution
The fourth proportional to 19,155,702.75, 28,708,602.88 and 7,782,855.63 is: 11,664,145.89
Step by Step Solution
- Step 1: Write the proportion equation
19,155,702.75 : 28,708,602.88 = 7,782,855.63 : x - Step 2: Convert to fraction form
19,155,702.75/28,708,602.88 = 7,782,855.63/x - Step 3: Cross multiply
19,155,702.75x = 28,708,602.88 × 7,782,855.63 - Step 4: Simplify right side
19,155,702.75x = 223,434,911,554,042.19 - Step 5: Solve for x
x = 223,434,911,554,042.19/19,155,702.75 - Step 6: Final answer
x = 11,664,145.89
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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.