Finding the Fourth Proportional to 13,165,814.16, 18,161,507.16 and 7,658,569.44
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Solution
The fourth proportional to 13,165,814.16, 18,161,507.16 and 7,658,569.44 is: 10,564,569.88
Step by Step Solution
- Step 1: Write the proportion equation
13,165,814.16 : 18,161,507.16 = 7,658,569.44 : x - Step 2: Convert to fraction form
13,165,814.16/18,161,507.16 = 7,658,569.44/x - Step 3: Cross multiply
13,165,814.16x = 18,161,507.16 × 7,658,569.44 - Step 4: Simplify right side
13,165,814.16x = 139,091,163,719,917.20 - Step 5: Solve for x
x = 139,091,163,719,917.20/13,165,814.16 - Step 6: Final answer
x = 10,564,569.88
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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.