Finding the Fourth Proportional to 20,432,522.79, 28,179,533.61 and 17,265,465.99
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Solution
The fourth proportional to 20,432,522.79, 28,179,533.61 and 17,265,465.99 is: 23,811,684.15
Step by Step Solution
- Step 1: Write the proportion equation
20,432,522.79 : 28,179,533.61 = 17,265,465.99 : x - Step 2: Convert to fraction form
20,432,522.79/28,179,533.61 = 17,265,465.99/x - Step 3: Cross multiply
20,432,522.79x = 28,179,533.61 × 17,265,465.99 - Step 4: Simplify right side
20,432,522.79x = 486,532,779,157,516.88 - Step 5: Solve for x
x = 486,532,779,157,516.88/20,432,522.79 - Step 6: Final answer
x = 23,811,684.15
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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.