Finding the Fourth Proportional to 13,747,869.18, 18,972,659.97 and 7,636,297.68
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Solution
The fourth proportional to 13,747,869.18, 18,972,659.97 and 7,636,297.68 is: 10,538,424.35
Step by Step Solution
- Step 1: Write the proportion equation
13,747,869.18 : 18,972,659.97 = 7,636,297.68 : x - Step 2: Convert to fraction form
13,747,869.18/18,972,659.97 = 7,636,297.68/x - Step 3: Cross multiply
13,747,869.18x = 18,972,659.97 × 7,636,297.68 - Step 4: Simplify right side
13,747,869.18x = 144,880,879,312,339.84 - Step 5: Solve for x
x = 144,880,879,312,339.84/13,747,869.18 - Step 6: Final answer
x = 10,538,424.35
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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.