Finding the Fourth Proportional to 18,142,215.30, 27,175,998.15 and 9,171,821.70
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Solution
The fourth proportional to 18,142,215.30, 27,175,998.15 and 9,171,821.70 is: 13,738,862.95
Step by Step Solution
- Step 1: Write the proportion equation
18,142,215.30 : 27,175,998.15 = 9,171,821.70 : x - Step 2: Convert to fraction form
18,142,215.30/27,175,998.15 = 9,171,821.70/x - Step 3: Cross multiply
18,142,215.30x = 27,175,998.15 × 9,171,821.70 - Step 4: Simplify right side
18,142,215.30x = 249,253,409,551,329.81 - Step 5: Solve for x
x = 249,253,409,551,329.81/18,142,215.30 - Step 6: Final answer
x = 13,738,862.95
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.