Finding the Fourth Proportional to 20,363,774.68, 28,100,968.50 and 11,194,645.96
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Solution
The fourth proportional to 20,363,774.68, 28,100,968.50 and 11,194,645.96 is: 15,448,039.40
Step by Step Solution
- Step 1: Write the proportion equation
20,363,774.68 : 28,100,968.50 = 11,194,645.96 : x - Step 2: Convert to fraction form
20,363,774.68/28,100,968.50 = 11,194,645.96/x - Step 3: Cross multiply
20,363,774.68x = 28,100,968.50 × 11,194,645.96 - Step 4: Simplify right side
20,363,774.68x = 314,580,393,490,612.31 - Step 5: Solve for x
x = 314,580,393,490,612.31/20,363,774.68 - Step 6: Final answer
x = 15,448,039.40
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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.