Finding the Fourth Proportional to 15,216,206.16, 20,986,120.44 and 13,376,731.44
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Solution
The fourth proportional to 15,216,206.16, 20,986,120.44 and 13,376,731.44 is: 18,449,125.50
Step by Step Solution
- Step 1: Write the proportion equation
15,216,206.16 : 20,986,120.44 = 13,376,731.44 : x - Step 2: Convert to fraction form
15,216,206.16/20,986,120.44 = 13,376,731.44/x - Step 3: Cross multiply
15,216,206.16x = 20,986,120.44 × 13,376,731.44 - Step 4: Simplify right side
15,216,206.16x = 280,725,697,093,374.62 - Step 5: Solve for x
x = 280,725,697,093,374.62/15,216,206.16 - Step 6: Final answer
x = 18,449,125.50
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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.