Finding the Fourth Proportional to 21,718,478.34, 29,971,859.49 and 11,929,827.06
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Solution
The fourth proportional to 21,718,478.34, 29,971,859.49 and 11,929,827.06 is: 16,463,358.75
Step by Step Solution
- Step 1: Write the proportion equation
21,718,478.34 : 29,971,859.49 = 11,929,827.06 : x - Step 2: Convert to fraction form
21,718,478.34/29,971,859.49 = 11,929,827.06/x - Step 3: Cross multiply
21,718,478.34x = 29,971,859.49 × 11,929,827.06 - Step 4: Simplify right side
21,718,478.34x = 357,559,100,382,319.81 - Step 5: Solve for x
x = 357,559,100,382,319.81/21,718,478.34 - Step 6: Final answer
x = 16,463,358.75
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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.