Finding the Fourth Proportional to 13,129,013.36, 18,103,755.48 and 8,536,818.80
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Solution
The fourth proportional to 13,129,013.36, 18,103,755.48 and 8,536,818.80 is: 11,771,522.80
Step by Step Solution
- Step 1: Write the proportion equation
13,129,013.36 : 18,103,755.48 = 8,536,818.80 : x - Step 2: Convert to fraction form
13,129,013.36/18,103,755.48 = 8,536,818.80/x - Step 3: Cross multiply
13,129,013.36x = 18,103,755.48 × 8,536,818.80 - Step 4: Simplify right side
13,129,013.36x = 154,548,480,132,267.03 - Step 5: Solve for x
x = 154,548,480,132,267.03/13,129,013.36 - Step 6: Final answer
x = 11,771,522.80
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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.