Finding the Fourth Proportional to 19,982,081.97, 29,919,231.66 and 13,048,385.37
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Solution
The fourth proportional to 19,982,081.97, 29,919,231.66 and 13,048,385.37 is: 19,537,386.81
Step by Step Solution
- Step 1: Write the proportion equation
19,982,081.97 : 29,919,231.66 = 13,048,385.37 : x - Step 2: Convert to fraction form
19,982,081.97/29,919,231.66 = 13,048,385.37/x - Step 3: Cross multiply
19,982,081.97x = 29,919,231.66 × 13,048,385.37 - Step 4: Simplify right side
19,982,081.97x = 390,397,664,673,984.81 - Step 5: Solve for x
x = 390,397,664,673,984.81/19,982,081.97 - Step 6: Final answer
x = 19,537,386.81
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.