Finding the Fourth Proportional to 28,291,416.75, 39,042,155.12 and 15,414,360.75
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Solution
The fourth proportional to 28,291,416.75, 39,042,155.12 and 15,414,360.75 is: 21,271,817.84
Step by Step Solution
- Step 1: Write the proportion equation
28,291,416.75 : 39,042,155.12 = 15,414,360.75 : x - Step 2: Convert to fraction form
28,291,416.75/39,042,155.12 = 15,414,360.75/x - Step 3: Cross multiply
28,291,416.75x = 39,042,155.12 × 15,414,360.75 - Step 4: Simplify right side
28,291,416.75x = 601,809,863,400,067.75 - Step 5: Solve for x
x = 601,809,863,400,067.75/28,291,416.75 - Step 6: Final answer
x = 21,271,817.84
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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.