Finding the Fourth Proportional to 18,191,516.30, 27,291,211.05 and 5,413,312.70
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Solution
The fourth proportional to 18,191,516.30, 27,291,211.05 and 5,413,312.70 is: 8,121,140.48
Step by Step Solution
- Step 1: Write the proportion equation
18,191,516.30 : 27,291,211.05 = 5,413,312.70 : x - Step 2: Convert to fraction form
18,191,516.30/27,291,211.05 = 5,413,312.70/x - Step 3: Cross multiply
18,191,516.30x = 27,291,211.05 × 5,413,312.70 - Step 4: Simplify right side
18,191,516.30x = 147,735,859,375,345.34 - Step 5: Solve for x
x = 147,735,859,375,345.34/18,191,516.30 - Step 6: Final answer
x = 8,121,140.48
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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.