Finding the Fourth Proportional to 13,718,637.18, 18,930,354.72 and 7,919,287.26
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Solution
The fourth proportional to 13,718,637.18, 18,930,354.72 and 7,919,287.26 is: 10,927,828.69
Step by Step Solution
- Step 1: Write the proportion equation
13,718,637.18 : 18,930,354.72 = 7,919,287.26 : x - Step 2: Convert to fraction form
13,718,637.18/18,930,354.72 = 7,919,287.26/x - Step 3: Cross multiply
13,718,637.18x = 18,930,354.72 × 7,919,287.26 - Step 4: Simplify right side
13,718,637.18x = 149,914,916,961,376.84 - Step 5: Solve for x
x = 149,914,916,961,376.84/13,718,637.18 - Step 6: Final answer
x = 10,927,828.69
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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.