Finding the Fourth Proportional to 28,949,262.76, 39,950,676.68 and 15,718,997.28
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Solution
The fourth proportional to 28,949,262.76, 39,950,676.68 and 15,718,997.28 is: 21,692,593.12
Step by Step Solution
- Step 1: Write the proportion equation
28,949,262.76 : 39,950,676.68 = 15,718,997.28 : x - Step 2: Convert to fraction form
28,949,262.76/39,950,676.68 = 15,718,997.28/x - Step 3: Cross multiply
28,949,262.76x = 39,950,676.68 × 15,718,997.28 - Step 4: Simplify right side
28,949,262.76x = 627,984,578,067,079.38 - Step 5: Solve for x
x = 627,984,578,067,079.38/28,949,262.76 - Step 6: Final answer
x = 21,692,593.12
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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.