Finding the Fourth Proportional to 28,731,224.88, 39,649,927.67 and 15,679,324.49
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Solution
The fourth proportional to 28,731,224.88, 39,649,927.67 and 15,679,324.49 is: 21,637,924.75
Step by Step Solution
- Step 1: Write the proportion equation
28,731,224.88 : 39,649,927.67 = 15,679,324.49 : x - Step 2: Convert to fraction form
28,731,224.88/39,649,927.67 = 15,679,324.49/x - Step 3: Cross multiply
28,731,224.88x = 39,649,927.67 × 15,679,324.49 - Step 4: Simplify right side
28,731,224.88x = 621,684,081,942,959.62 - Step 5: Solve for x
x = 621,684,081,942,959.62/28,731,224.88 - Step 6: Final answer
x = 21,637,924.75
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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.