Finding the Fourth Proportional to 11,656,688.20, 17,485,032.30 and 7,415,657.80
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Solution
The fourth proportional to 11,656,688.20, 17,485,032.30 and 7,415,657.80 is: 11,123,486.70
Step by Step Solution
- Step 1: Write the proportion equation
11,656,688.20 : 17,485,032.30 = 7,415,657.80 : x - Step 2: Convert to fraction form
11,656,688.20/17,485,032.30 = 7,415,657.80/x - Step 3: Cross multiply
11,656,688.20x = 17,485,032.30 × 7,415,657.80 - Step 4: Simplify right side
11,656,688.20x = 129,663,016,158,746.94 - Step 5: Solve for x
x = 129,663,016,158,746.94/11,656,688.20 - Step 6: Final answer
x = 11,123,486.70
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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.