Finding the Fourth Proportional to 20,230,822.62, 27,918,478.76 and 10,938,327.66
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Solution
The fourth proportional to 20,230,822.62, 27,918,478.76 and 10,938,327.66 is: 15,094,861.64
Step by Step Solution
- Step 1: Write the proportion equation
20,230,822.62 : 27,918,478.76 = 10,938,327.66 : x - Step 2: Convert to fraction form
20,230,822.62/27,918,478.76 = 10,938,327.66/x - Step 3: Cross multiply
20,230,822.62x = 27,918,478.76 × 10,938,327.66 - Step 4: Simplify right side
20,230,822.62x = 305,381,468,390,938.88 - Step 5: Solve for x
x = 305,381,468,390,938.88/20,230,822.62 - Step 6: Final answer
x = 15,094,861.64
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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.