Finding the Fourth Proportional to 15,371,656.91, 21,212,516.61 and 8,402,020.82
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Solution
The fourth proportional to 15,371,656.91, 21,212,516.61 and 8,402,020.82 is: 11,594,586.53
Step by Step Solution
- Step 1: Write the proportion equation
15,371,656.91 : 21,212,516.61 = 8,402,020.82 : x - Step 2: Convert to fraction form
15,371,656.91/21,212,516.61 = 8,402,020.82/x - Step 3: Cross multiply
15,371,656.91x = 21,212,516.61 × 8,402,020.82 - Step 4: Simplify right side
15,371,656.91x = 178,228,006,095,753.22 - Step 5: Solve for x
x = 178,228,006,095,753.22/15,371,656.91 - Step 6: Final answer
x = 11,594,586.53
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.