Finding the Fourth Proportional to 20,289,720.18, 27,996,823.68 and 12,338,206.14
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Solution
The fourth proportional to 20,289,720.18, 27,996,823.68 and 12,338,206.14 is: 17,024,906.15
Step by Step Solution
- Step 1: Write the proportion equation
20,289,720.18 : 27,996,823.68 = 12,338,206.14 : x - Step 2: Convert to fraction form
20,289,720.18/27,996,823.68 = 12,338,206.14/x - Step 3: Cross multiply
20,289,720.18x = 27,996,823.68 × 12,338,206.14 - Step 4: Simplify right side
20,289,720.18x = 345,430,581,829,073.44 - Step 5: Solve for x
x = 345,430,581,829,073.44/20,289,720.18 - Step 6: Final answer
x = 17,024,906.15
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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.