Finding the Fourth Proportional to 10,434,639.16, 14,387,509.74 and 9,660,771.64
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Solution
The fourth proportional to 10,434,639.16, 14,387,509.74 and 9,660,771.64 is: 13,320,484.20
Step by Step Solution
- Step 1: Write the proportion equation
10,434,639.16 : 14,387,509.74 = 9,660,771.64 : x - Step 2: Convert to fraction form
10,434,639.16/14,387,509.74 = 9,660,771.64/x - Step 3: Cross multiply
10,434,639.16x = 14,387,509.74 × 9,660,771.64 - Step 4: Simplify right side
10,434,639.16x = 138,994,446,066,415.78 - Step 5: Solve for x
x = 138,994,446,066,415.78/10,434,639.16 - Step 6: Final answer
x = 13,320,484.20
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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.