Finding the Fourth Proportional to 10,315,011.92, 15,474,938.14 and 10,143,638.60
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Solution
The fourth proportional to 10,315,011.92, 15,474,938.14 and 10,143,638.60 is: 15,217,837.95
Step by Step Solution
- Step 1: Write the proportion equation
10,315,011.92 : 15,474,938.14 = 10,143,638.60 : x - Step 2: Convert to fraction form
10,315,011.92/15,474,938.14 = 10,143,638.60/x - Step 3: Cross multiply
10,315,011.92x = 15,474,938.14 × 10,143,638.60 - Step 4: Simplify right side
10,315,011.92x = 156,972,179,849,516.22 - Step 5: Solve for x
x = 156,972,179,849,516.22/10,315,011.92 - Step 6: Final answer
x = 15,217,837.95
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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.