Finding the Fourth Proportional to 13,438,128.36, 18,543,817.74 and 7,636,104.84
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Solution
The fourth proportional to 13,438,128.36, 18,543,817.74 and 7,636,104.84 is: 10,537,370.43
Step by Step Solution
- Step 1: Write the proportion equation
13,438,128.36 : 18,543,817.74 = 7,636,104.84 : x - Step 2: Convert to fraction form
13,438,128.36/18,543,817.74 = 7,636,104.84/x - Step 3: Cross multiply
13,438,128.36x = 18,543,817.74 × 7,636,104.84 - Step 4: Simplify right side
13,438,128.36x = 141,602,536,396,491.84 - Step 5: Solve for x
x = 141,602,536,396,491.84/13,438,128.36 - Step 6: Final answer
x = 10,537,370.43
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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.