Finding the Fourth Proportional to 20,432,525.79, 28,179,537.75 and 17,265,468.99
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Solution
The fourth proportional to 20,432,525.79, 28,179,537.75 and 17,265,468.99 is: 23,811,688.29
Step by Step Solution
- Step 1: Write the proportion equation
20,432,525.79 : 28,179,537.75 = 17,265,468.99 : x - Step 2: Convert to fraction form
20,432,525.79/28,179,537.75 = 17,265,468.99/x - Step 3: Cross multiply
20,432,525.79x = 28,179,537.75 × 17,265,468.99 - Step 4: Simplify right side
20,432,525.79x = 486,532,935,175,159.31 - Step 5: Solve for x
x = 486,532,935,175,159.31/20,432,525.79 - Step 6: Final answer
x = 23,811,688.29
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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.