Finding the Fourth Proportional to 19,858,421.40, 29,787,039.12 and 5,482,366.44
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Solution
The fourth proportional to 19,858,421.40, 29,787,039.12 and 5,482,366.44 is: 8,223,385.95
Step by Step Solution
- Step 1: Write the proportion equation
19,858,421.40 : 29,787,039.12 = 5,482,366.44 : x - Step 2: Convert to fraction form
19,858,421.40/29,787,039.12 = 5,482,366.44/x - Step 3: Cross multiply
19,858,421.40x = 29,787,039.12 × 5,482,366.44 - Step 4: Simplify right side
19,858,421.40x = 163,303,463,618,455.16 - Step 5: Solve for x
x = 163,303,463,618,455.16/19,858,421.40 - Step 6: Final answer
x = 8,223,385.95
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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.