Finding the Fourth Proportional to 15,012,511.76, 20,717,302.92 and 8,136,986.96
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Solution
The fourth proportional to 15,012,511.76, 20,717,302.92 and 8,136,986.96 is: 11,229,061.89
Step by Step Solution
- Step 1: Write the proportion equation
15,012,511.76 : 20,717,302.92 = 8,136,986.96 : x - Step 2: Convert to fraction form
15,012,511.76/20,717,302.92 = 8,136,986.96/x - Step 3: Cross multiply
15,012,511.76x = 20,717,302.92 × 8,136,986.96 - Step 4: Simplify right side
15,012,511.76x = 168,576,423,706,409.94 - Step 5: Solve for x
x = 168,576,423,706,409.94/15,012,511.76 - Step 6: Final answer
x = 11,229,061.89
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.