Finding the Fourth Proportional to 28,156,185.75, 38,855,536.34 and 15,279,129.75
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Solution
The fourth proportional to 28,156,185.75, 38,855,536.34 and 15,279,129.75 is: 21,085,199.06
Step by Step Solution
- Step 1: Write the proportion equation
28,156,185.75 : 38,855,536.34 = 15,279,129.75 : x - Step 2: Convert to fraction form
28,156,185.75/38,855,536.34 = 15,279,129.75/x - Step 3: Cross multiply
28,156,185.75x = 38,855,536.34 × 15,279,129.75 - Step 4: Simplify right side
28,156,185.75x = 593,678,781,244,700.12 - Step 5: Solve for x
x = 593,678,781,244,700.12/28,156,185.75 - Step 6: Final answer
x = 21,085,199.06
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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.