Finding the Fourth Proportional to 28,985,438.96, 39,999,669.98 and 15,932,559.09
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Solution
The fourth proportional to 28,985,438.96, 39,999,669.98 and 15,932,559.09 is: 21,986,801.94
Step by Step Solution
- Step 1: Write the proportion equation
28,985,438.96 : 39,999,669.98 = 15,932,559.09 : x - Step 2: Convert to fraction form
28,985,438.96/39,999,669.98 = 15,932,559.09/x - Step 3: Cross multiply
28,985,438.96x = 39,999,669.98 × 15,932,559.09 - Step 4: Simplify right side
28,985,438.96x = 637,297,105,457,186.38 - Step 5: Solve for x
x = 637,297,105,457,186.38/28,985,438.96 - Step 6: Final answer
x = 21,986,801.94
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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.