Finding the Fourth Proportional to 28,083,935,129.57, 38,755,821,124.42 and 15,396,398,387.09
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Solution
The fourth proportional to 28,083,935,129.57, 38,755,821,124.42 and 15,396,398,387.09 is: 21,247,024,645.84
Step by Step Solution
- Step 1: Write the proportion equation
28,083,935,129.57 : 38,755,821,124.42 = 15,396,398,387.09 : x - Step 2: Convert to fraction form
28,083,935,129.57/38,755,821,124.42 = 15,396,398,387.09/x - Step 3: Cross multiply
28,083,935,129.57x = 38,755,821,124.42 × 15,396,398,387.09 - Step 4: Simplify right side
28,083,935,129.57x = 596,700,061,850,128,613,376 - Step 5: Solve for x
x = 596,700,061,850,128,613,376/28,083,935,129.57 - Step 6: Final answer
x = 21,247,024,645.84
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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.