Finding the Fourth Proportional to 20,081,414,331.80, 30,122,121,497.70 and 18,856,974,267.80
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Solution
The fourth proportional to 20,081,414,331.80, 30,122,121,497.70 and 18,856,974,267.80 is: 28,285,461,401.70
Step by Step Solution
- Step 1: Write the proportion equation
20,081,414,331.80 : 30,122,121,497.70 = 18,856,974,267.80 : x - Step 2: Convert to fraction form
20,081,414,331.80/30,122,121,497.70 = 18,856,974,267.80/x - Step 3: Cross multiply
20,081,414,331.80x = 30,122,121,497.70 × 18,856,974,267.80 - Step 4: Simplify right side
20,081,414,331.80x = 568,012,069,973,674,098,688 - Step 5: Solve for x
x = 568,012,069,973,674,098,688/20,081,414,331.80 - Step 6: Final answer
x = 28,285,461,401.70
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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.