Finding the Fourth Proportional to 20,417,119.90, 28,177,611.06 and 15,251,513.38
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Solution
The fourth proportional to 20,417,119.90, 28,177,611.06 and 15,251,513.38 is: 21,048,571.70
Step by Step Solution
- Step 1: Write the proportion equation
20,417,119.90 : 28,177,611.06 = 15,251,513.38 : x - Step 2: Convert to fraction form
20,417,119.90/28,177,611.06 = 15,251,513.38/x - Step 3: Cross multiply
20,417,119.90x = 28,177,611.06 × 15,251,513.38 - Step 4: Simplify right side
20,417,119.90x = 429,751,212,098,026 - Step 5: Solve for x
x = 429,751,212,098,026/20,417,119.90 - Step 6: Final answer
x = 21,048,571.70
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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.