Finding the Fourth Proportional to 19,957,307.70, 29,935,961.55 and 13,580,015.70
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Solution
The fourth proportional to 19,957,307.70, 29,935,961.55 and 13,580,015.70 is: 20,370,023.55
Step by Step Solution
- Step 1: Write the proportion equation
19,957,307.70 : 29,935,961.55 = 13,580,015.70 : x - Step 2: Convert to fraction form
19,957,307.70/29,935,961.55 = 13,580,015.70/x - Step 3: Cross multiply
19,957,307.70x = 29,935,961.55 × 13,580,015.70 - Step 4: Simplify right side
19,957,307.70x = 406,530,827,843,596.31 - Step 5: Solve for x
x = 406,530,827,843,596.31/19,957,307.70 - Step 6: Final answer
x = 20,370,023.55
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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.