Finding the Fourth Proportional to 28,943,326.36, 39,942,913.62 and 15,891,135.40
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Solution
The fourth proportional to 28,943,326.36, 39,942,913.62 and 15,891,135.40 is: 21,930,383.56
Step by Step Solution
- Step 1: Write the proportion equation
28,943,326.36 : 39,942,913.62 = 15,891,135.40 : x - Step 2: Convert to fraction form
28,943,326.36/39,942,913.62 = 15,891,135.40/x - Step 3: Cross multiply
28,943,326.36x = 39,942,913.62 × 15,891,135.40 - Step 4: Simplify right side
28,943,326.36x = 634,738,248,605,924.12 - Step 5: Solve for x
x = 634,738,248,605,924.12/28,943,326.36 - Step 6: Final answer
x = 21,930,383.56
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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.