Finding the Fourth Proportional to 27,997,936.43, 38,615,248.95 and 18,211,505.70
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Solution
The fourth proportional to 27,997,936.43, 38,615,248.95 and 18,211,505.70 is: 25,117,630.66
Step by Step Solution
- Step 1: Write the proportion equation
27,997,936.43 : 38,615,248.95 = 18,211,505.70 : x - Step 2: Convert to fraction form
27,997,936.43/38,615,248.95 = 18,211,505.70/x - Step 3: Cross multiply
27,997,936.43x = 38,615,248.95 × 18,211,505.70 - Step 4: Simplify right side
27,997,936.43x = 703,241,826,359,844 - Step 5: Solve for x
x = 703,241,826,359,844/27,997,936.43 - Step 6: Final answer
x = 25,117,630.66
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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.