Finding the Fourth Proportional to 28,731,044.09, 39,649,684.20 and 15,679,145.41
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Solution
The fourth proportional to 28,731,044.09, 39,649,684.20 and 15,679,145.41 is: 21,637,680.90
Step by Step Solution
- Step 1: Write the proportion equation
28,731,044.09 : 39,649,684.20 = 15,679,145.41 : x - Step 2: Convert to fraction form
28,731,044.09/39,649,684.20 = 15,679,145.41/x - Step 3: Cross multiply
28,731,044.09x = 39,649,684.20 × 15,679,145.41 - Step 4: Simplify right side
28,731,044.09x = 621,673,164,032,379.62 - Step 5: Solve for x
x = 621,673,164,032,379.62/28,731,044.09 - Step 6: Final answer
x = 21,637,680.90
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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.