Finding the Fourth Proportional to 13,468,643.10, 20,202,964.65 and 12,724,625.70
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Solution
The fourth proportional to 13,468,643.10, 20,202,964.65 and 12,724,625.70 is: 19,086,938.55
Step by Step Solution
- Step 1: Write the proportion equation
13,468,643.10 : 20,202,964.65 = 12,724,625.70 : x - Step 2: Convert to fraction form
13,468,643.10/20,202,964.65 = 12,724,625.70/x - Step 3: Cross multiply
13,468,643.10x = 20,202,964.65 × 12,724,625.70 - Step 4: Simplify right side
13,468,643.10x = 257,075,163,201,581.47 - Step 5: Solve for x
x = 257,075,163,201,581.47/13,468,643.10 - Step 6: Final answer
x = 19,086,938.55
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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.