Finding the Fourth Proportional to 20,413,473.90, 30,584,781.45 and 13,221,305.70
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Solution
The fourth proportional to 20,413,473.90, 30,584,781.45 and 13,221,305.70 is: 19,809,011.80
Step by Step Solution
- Step 1: Write the proportion equation
20,413,473.90 : 30,584,781.45 = 13,221,305.70 : x - Step 2: Convert to fraction form
20,413,473.90/30,584,781.45 = 13,221,305.70/x - Step 3: Cross multiply
20,413,473.90x = 30,584,781.45 × 13,221,305.70 - Step 4: Simplify right side
20,413,473.90x = 404,370,745,318,139.25 - Step 5: Solve for x
x = 404,370,745,318,139.25/20,413,473.90 - Step 6: Final answer
x = 19,809,011.80
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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.