Finding the Fourth Proportional to 20,848,403.72, 28,770,747.48 and 11,429,178.08
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Solution
The fourth proportional to 20,848,403.72, 28,770,747.48 and 11,429,178.08 is: 15,772,238.53
Step by Step Solution
- Step 1: Write the proportion equation
20,848,403.72 : 28,770,747.48 = 11,429,178.08 : x - Step 2: Convert to fraction form
20,848,403.72/28,770,747.48 = 11,429,178.08/x - Step 3: Cross multiply
20,848,403.72x = 28,770,747.48 × 11,429,178.08 - Step 4: Simplify right side
20,848,403.72x = 328,825,996,443,631.25 - Step 5: Solve for x
x = 328,825,996,443,631.25/20,848,403.72 - Step 6: Final answer
x = 15,772,238.53
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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.