Finding the Fourth Proportional to 13,319,309.40, 18,380,646.27 and 7,207,737.90
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Solution
The fourth proportional to 13,319,309.40, 18,380,646.27 and 7,207,737.90 is: 9,946,677.92
Step by Step Solution
- Step 1: Write the proportion equation
13,319,309.40 : 18,380,646.27 = 7,207,737.90 : x - Step 2: Convert to fraction form
13,319,309.40/18,380,646.27 = 7,207,737.90/x - Step 3: Cross multiply
13,319,309.40x = 18,380,646.27 × 7,207,737.90 - Step 4: Simplify right side
13,319,309.40x = 132,482,880,746,772.64 - Step 5: Solve for x
x = 132,482,880,746,772.64/13,319,309.40 - Step 6: Final answer
x = 9,946,677.92
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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.