Finding the Fourth Proportional to 20,446,552.19, 28,211,209.39 and 12,497,082.59
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Solution
The fourth proportional to 20,446,552.19, 28,211,209.39 and 12,497,082.59 is: 17,242,897.99
Step by Step Solution
- Step 1: Write the proportion equation
20,446,552.19 : 28,211,209.39 = 12,497,082.59 : x - Step 2: Convert to fraction form
20,446,552.19/28,211,209.39 = 12,497,082.59/x - Step 3: Cross multiply
20,446,552.19x = 28,211,209.39 × 12,497,082.59 - Step 4: Simplify right side
20,446,552.19x = 352,557,813,710,613.50 - Step 5: Solve for x
x = 352,557,813,710,613.50/20,446,552.19 - Step 6: Final answer
x = 17,242,897.99
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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.