Finding the Fourth Proportional to 22,431,966.22, 30,966,446.91 and 13,138,246.54
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Solution
The fourth proportional to 22,431,966.22, 30,966,446.91 and 13,138,246.54 is: 18,136,832.50
Step by Step Solution
- Step 1: Write the proportion equation
22,431,966.22 : 30,966,446.91 = 13,138,246.54 : x - Step 2: Convert to fraction form
22,431,966.22/30,966,446.91 = 13,138,246.54/x - Step 3: Cross multiply
22,431,966.22x = 30,966,446.91 × 13,138,246.54 - Step 4: Simplify right side
22,431,966.22x = 406,844,813,971,401.19 - Step 5: Solve for x
x = 406,844,813,971,401.19/22,431,966.22 - Step 6: Final answer
x = 18,136,832.50
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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.