Finding the Fourth Proportional to 13,718,658.18, 18,928,681.71 and 7,836,412.09
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Solution
The fourth proportional to 13,718,658.18, 18,928,681.71 and 7,836,412.09 is: 10,812,496.98
Step by Step Solution
- Step 1: Write the proportion equation
13,718,658.18 : 18,928,681.71 = 7,836,412.09 : x - Step 2: Convert to fraction form
13,718,658.18/18,928,681.71 = 7,836,412.09/x - Step 3: Cross multiply
13,718,658.18x = 18,928,681.71 × 7,836,412.09 - Step 4: Simplify right side
13,718,658.18x = 148,332,950,149,631.81 - Step 5: Solve for x
x = 148,332,950,149,631.81/13,718,658.18 - Step 6: Final answer
x = 10,812,496.98
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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.