Finding the Fourth Proportional to 21,660,941.62, 29,874,880.65 and 18,408,522.70
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Solution
The fourth proportional to 21,660,941.62, 29,874,880.65 and 18,408,522.70 is: 25,389,127.96
Step by Step Solution
- Step 1: Write the proportion equation
21,660,941.62 : 29,874,880.65 = 18,408,522.70 : x - Step 2: Convert to fraction form
21,660,941.62/29,874,880.65 = 18,408,522.70/x - Step 3: Cross multiply
21,660,941.62x = 29,874,880.65 × 18,408,522.70 - Step 4: Simplify right side
21,660,941.62x = 549,952,418,605,315.69 - Step 5: Solve for x
x = 549,952,418,605,315.69/21,660,941.62 - Step 6: Final answer
x = 25,389,127.96
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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.