Finding the Fourth Proportional to 19,740,217.20, 29,654,562.60 and 18,934,124.40
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Solution
The fourth proportional to 19,740,217.20, 29,654,562.60 and 18,934,124.40 is: 28,443,616.99
Step by Step Solution
- Step 1: Write the proportion equation
19,740,217.20 : 29,654,562.60 = 18,934,124.40 : x - Step 2: Convert to fraction form
19,740,217.20/29,654,562.60 = 18,934,124.40/x - Step 3: Cross multiply
19,740,217.20x = 29,654,562.60 × 18,934,124.40 - Step 4: Simplify right side
19,740,217.20x = 561,483,177,295,987.44 - Step 5: Solve for x
x = 561,483,177,295,987.44/19,740,217.20 - Step 6: Final answer
x = 28,443,616.99
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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.