Finding the Fourth Proportional to 20,094,045.81, 27,745,402.80 and 15,440,495.57
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Solution
The fourth proportional to 20,094,045.81, 27,745,402.80 and 15,440,495.57 is: 21,319,886.15
Step by Step Solution
- Step 1: Write the proportion equation
20,094,045.81 : 27,745,402.80 = 15,440,495.57 : x - Step 2: Convert to fraction form
20,094,045.81/27,745,402.80 = 15,440,495.57/x - Step 3: Cross multiply
20,094,045.81x = 27,745,402.80 × 15,440,495.57 - Step 4: Simplify right side
20,094,045.81x = 428,402,769,021,265.62 - Step 5: Solve for x
x = 428,402,769,021,265.62/20,094,045.81 - Step 6: Final answer
x = 21,319,886.15
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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.