Finding the Fourth Proportional to 13,146,830.70, 19,720,246.05 and 12,262,094.70
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Solution
The fourth proportional to 13,146,830.70, 19,720,246.05 and 12,262,094.70 is: 18,393,142.05
Step by Step Solution
- Step 1: Write the proportion equation
13,146,830.70 : 19,720,246.05 = 12,262,094.70 : x - Step 2: Convert to fraction form
13,146,830.70/19,720,246.05 = 12,262,094.70/x - Step 3: Cross multiply
13,146,830.70x = 19,720,246.05 × 12,262,094.70 - Step 4: Simplify right side
13,146,830.70x = 241,811,524,572,400.94 - Step 5: Solve for x
x = 241,811,524,572,400.94/13,146,830.70 - Step 6: Final answer
x = 18,393,142.05
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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.