Finding the Fourth Proportional to 13,291,392.63, 18,342,138.20 and 7,179,821.13
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Solution
The fourth proportional to 13,291,392.63, 18,342,138.20 and 7,179,821.13 is: 9,908,162.00
Step by Step Solution
- Step 1: Write the proportion equation
13,291,392.63 : 18,342,138.20 = 7,179,821.13 : x - Step 2: Convert to fraction form
13,291,392.63/18,342,138.20 = 7,179,821.13/x - Step 3: Cross multiply
13,291,392.63x = 18,342,138.20 × 7,179,821.13 - Step 4: Simplify right side
13,291,392.63x = 131,693,271,381,841.06 - Step 5: Solve for x
x = 131,693,271,381,841.06/13,291,392.63 - Step 6: Final answer
x = 9,908,162.00
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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.