Finding the Fourth Proportional to 28,564,518.42, 39,418,912.17 and 15,511,669.74
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Solution
The fourth proportional to 28,564,518.42, 39,418,912.17 and 15,511,669.74 is: 21,406,037.31
Step by Step Solution
- Step 1: Write the proportion equation
28,564,518.42 : 39,418,912.17 = 15,511,669.74 : x - Step 2: Convert to fraction form
28,564,518.42/39,418,912.17 = 15,511,669.74/x - Step 3: Cross multiply
28,564,518.42x = 39,418,912.17 × 15,511,669.74 - Step 4: Simplify right side
28,564,518.42x = 611,453,147,091,106.75 - Step 5: Solve for x
x = 611,453,147,091,106.75/28,564,518.42 - Step 6: Final answer
x = 21,406,037.31
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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.