Finding the Fourth Proportional to 20,242,289.60, 27,935,057.28 and 11,074,932.80
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Solution
The fourth proportional to 20,242,289.60, 27,935,057.28 and 11,074,932.80 is: 15,283,788.95
Step by Step Solution
- Step 1: Write the proportion equation
20,242,289.60 : 27,935,057.28 = 11,074,932.80 : x - Step 2: Convert to fraction form
20,242,289.60/27,935,057.28 = 11,074,932.80/x - Step 3: Cross multiply
20,242,289.60x = 27,935,057.28 × 11,074,932.80 - Step 4: Simplify right side
20,242,289.60x = 309,378,882,140,150.81 - Step 5: Solve for x
x = 309,378,882,140,150.81/20,242,289.60 - Step 6: Final answer
x = 15,283,788.95
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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.