Finding the Fourth Proportional to 13,143,239.20, 19,721,916.72 and 5,472,179.68
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Solution
The fourth proportional to 13,143,239.20, 19,721,916.72 and 5,472,179.68 is: 8,211,208.08
Step by Step Solution
- Step 1: Write the proportion equation
13,143,239.20 : 19,721,916.72 = 5,472,179.68 : x - Step 2: Convert to fraction form
13,143,239.20/19,721,916.72 = 5,472,179.68/x - Step 3: Cross multiply
13,143,239.20x = 19,721,916.72 × 5,472,179.68 - Step 4: Simplify right side
13,143,239.20x = 107,921,871,925,836.23 - Step 5: Solve for x
x = 107,921,871,925,836.23/13,143,239.20 - Step 6: Final answer
x = 8,211,208.08
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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.