Finding the Fourth Proportional to 15,297,409.11, 21,109,623.26 and 8,420,547.99
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Solution
The fourth proportional to 15,297,409.11, 21,109,623.26 and 8,420,547.99 is: 11,619,915.14
Step by Step Solution
- Step 1: Write the proportion equation
15,297,409.11 : 21,109,623.26 = 8,420,547.99 : x - Step 2: Convert to fraction form
15,297,409.11/21,109,623.26 = 8,420,547.99/x - Step 3: Cross multiply
15,297,409.11x = 21,109,623.26 × 8,420,547.99 - Step 4: Simplify right side
15,297,409.11x = 177,754,595,669,547.50 - Step 5: Solve for x
x = 177,754,595,669,547.50/15,297,409.11 - Step 6: Final answer
x = 11,619,915.14
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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.