Finding the Fourth Proportional to 13,137,719.40, 19,721,324.70 and 10,159,108.20
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Solution
The fourth proportional to 13,137,719.40, 19,721,324.70 and 10,159,108.20 is: 15,250,064.75
Step by Step Solution
- Step 1: Write the proportion equation
13,137,719.40 : 19,721,324.70 = 10,159,108.20 : x - Step 2: Convert to fraction form
13,137,719.40/19,721,324.70 = 10,159,108.20/x - Step 3: Cross multiply
13,137,719.40x = 19,721,324.70 × 10,159,108.20 - Step 4: Simplify right side
13,137,719.40x = 200,351,071,474,632.53 - Step 5: Solve for x
x = 200,351,071,474,632.53/13,137,719.40 - Step 6: Final answer
x = 15,250,064.75
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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.