Finding the Fourth Proportional to 15,935,781.24, 21,990,741.84 and 9,411,513.12
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Solution
The fourth proportional to 15,935,781.24, 21,990,741.84 and 9,411,513.12 is: 12,987,512.33
Step by Step Solution
- Step 1: Write the proportion equation
15,935,781.24 : 21,990,741.84 = 9,411,513.12 : x - Step 2: Convert to fraction form
15,935,781.24/21,990,741.84 = 9,411,513.12/x - Step 3: Cross multiply
15,935,781.24x = 21,990,741.84 × 9,411,513.12 - Step 4: Simplify right side
15,935,781.24x = 206,966,155,345,692.91 - Step 5: Solve for x
x = 206,966,155,345,692.91/15,935,781.24 - Step 6: Final answer
x = 12,987,512.33
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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.