Finding the Fourth Proportional to 15,247,941.86, 21,042,159.86 and 8,372,423.94
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Solution
The fourth proportional to 15,247,941.86, 21,042,159.86 and 8,372,423.94 is: 11,553,945.09
Step by Step Solution
- Step 1: Write the proportion equation
15,247,941.86 : 21,042,159.86 = 8,372,423.94 : x - Step 2: Convert to fraction form
15,247,941.86/21,042,159.86 = 8,372,423.94/x - Step 3: Cross multiply
15,247,941.86x = 21,042,159.86 × 8,372,423.94 - Step 4: Simplify right side
15,247,941.86x = 176,173,882,961,171.06 - Step 5: Solve for x
x = 176,173,882,961,171.06/15,247,941.86 - Step 6: Final answer
x = 11,553,945.09
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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.