Finding the Fourth Proportional to 18,617,420,800.80, 27,939,736,090.80 and 13,107,440,512.80
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Solution
The fourth proportional to 18,617,420,800.80, 27,939,736,090.80 and 13,107,440,512.80 is: 19,670,739,178.75
Step by Step Solution
- Step 1: Write the proportion equation
18,617,420,800.80 : 27,939,736,090.80 = 13,107,440,512.80 : x - Step 2: Convert to fraction form
18,617,420,800.80/27,939,736,090.80 = 13,107,440,512.80/x - Step 3: Cross multiply
18,617,420,800.80x = 27,939,736,090.80 × 13,107,440,512.80 - Step 4: Simplify right side
18,617,420,800.80x = 366,218,428,753,492,180,992 - Step 5: Solve for x
x = 366,218,428,753,492,180,992/18,617,420,800.80 - Step 6: Final answer
x = 19,670,739,178.75
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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.