Finding the Fourth Proportional to 13,518,106.65, 18,648,733.90 and 11,970,945.09
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Solution
The fourth proportional to 13,518,106.65, 18,648,733.90 and 11,970,945.09 is: 16,514,366.64
Step by Step Solution
- Step 1: Write the proportion equation
13,518,106.65 : 18,648,733.90 = 11,970,945.09 : x - Step 2: Convert to fraction form
13,518,106.65/18,648,733.90 = 11,970,945.09/x - Step 3: Cross multiply
13,518,106.65x = 18,648,733.90 × 11,970,945.09 - Step 4: Simplify right side
13,518,106.65x = 223,242,969,514,921.53 - Step 5: Solve for x
x = 223,242,969,514,921.53/13,518,106.65 - Step 6: Final answer
x = 16,514,366.64
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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.