Finding the Fourth Proportional to 28,731,230.40, 39,649,935.28 and 15,679,329.98
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Solution
The fourth proportional to 28,731,230.40, 39,649,935.28 and 15,679,329.98 is: 21,637,932.32
Step by Step Solution
- Step 1: Write the proportion equation
28,731,230.40 : 39,649,935.28 = 15,679,329.98 : x - Step 2: Convert to fraction form
28,731,230.40/39,649,935.28 = 15,679,329.98/x - Step 3: Cross multiply
28,731,230.40x = 39,649,935.28 × 15,679,329.98 - Step 4: Simplify right side
28,731,230.40x = 621,684,418,940,763.75 - Step 5: Solve for x
x = 621,684,418,940,763.75/28,731,230.40 - Step 6: Final answer
x = 21,637,932.32
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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.