Finding the Fourth Proportional to 13,178,190.63, 18,186,282.68 and 7,376,937.87
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Solution
The fourth proportional to 13,178,190.63, 18,186,282.68 and 7,376,937.87 is: 10,180,386.76
Step by Step Solution
- Step 1: Write the proportion equation
13,178,190.63 : 18,186,282.68 = 7,376,937.87 : x - Step 2: Convert to fraction form
13,178,190.63/18,186,282.68 = 7,376,937.87/x - Step 3: Cross multiply
13,178,190.63x = 18,186,282.68 × 7,376,937.87 - Step 4: Simplify right side
13,178,190.63x = 134,159,077,379,732.41 - Step 5: Solve for x
x = 134,159,077,379,732.41/13,178,190.63 - Step 6: Final answer
x = 10,180,386.76
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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.