Finding the Fourth Proportional to 28,684,465.90, 39,583,411.16 and 15,631,446.62
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Solution
The fourth proportional to 28,684,465.90, 39,583,411.16 and 15,631,446.62 is: 21,570,768.68
Step by Step Solution
- Step 1: Write the proportion equation
28,684,465.90 : 39,583,411.16 = 15,631,446.62 : x - Step 2: Convert to fraction form
28,684,465.90/39,583,411.16 = 15,631,446.62/x - Step 3: Cross multiply
28,684,465.90x = 39,583,411.16 × 15,631,446.62 - Step 4: Simplify right side
28,684,465.90x = 618,745,978,605,853.62 - Step 5: Solve for x
x = 618,745,978,605,853.62/28,684,465.90 - Step 6: Final answer
x = 21,570,768.68
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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.