Finding the Fourth Proportional to 28,840,169.68, 39,799,431.20 and 15,787,437.44
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Solution
The fourth proportional to 28,840,169.68, 39,799,431.20 and 15,787,437.44 is: 21,786,662.04
Step by Step Solution
- Step 1: Write the proportion equation
28,840,169.68 : 39,799,431.20 = 15,787,437.44 : x - Step 2: Convert to fraction form
28,840,169.68/39,799,431.20 = 15,787,437.44/x - Step 3: Cross multiply
28,840,169.68x = 39,799,431.20 × 15,787,437.44 - Step 4: Simplify right side
28,840,169.68x = 628,331,030,058,055.62 - Step 5: Solve for x
x = 628,331,030,058,055.62/28,840,169.68 - Step 6: Final answer
x = 21,786,662.04
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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.