Finding the Fourth Proportional to 15,189,487.18, 20,961,689.18 and 8,313,821.62
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Solution
The fourth proportional to 15,189,487.18, 20,961,689.18 and 8,313,821.62 is: 11,473,181.59
Step by Step Solution
- Step 1: Write the proportion equation
15,189,487.18 : 20,961,689.18 = 8,313,821.62 : x - Step 2: Convert to fraction form
15,189,487.18/20,961,689.18 = 8,313,821.62/x - Step 3: Cross multiply
15,189,487.18x = 20,961,689.18 × 8,313,821.62 - Step 4: Simplify right side
15,189,487.18x = 174,271,744,696,404.06 - Step 5: Solve for x
x = 174,271,744,696,404.06/15,189,487.18 - Step 6: Final answer
x = 11,473,181.59
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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.