Finding the Fourth Proportional to 13,638,429.66, 18,827,170.74 and 8,994,969.38
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Solution
The fourth proportional to 13,638,429.66, 18,827,170.74 and 8,994,969.38 is: 12,417,105.82
Step by Step Solution
- Step 1: Write the proportion equation
13,638,429.66 : 18,827,170.74 = 8,994,969.38 : x - Step 2: Convert to fraction form
13,638,429.66/18,827,170.74 = 8,994,969.38/x - Step 3: Cross multiply
13,638,429.66x = 18,827,170.74 × 8,994,969.38 - Step 4: Simplify right side
13,638,429.66x = 169,349,824,318,331.94 - Step 5: Solve for x
x = 169,349,824,318,331.94/13,638,429.66 - Step 6: Final answer
x = 12,417,105.82
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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.