Finding the Fourth Proportional to 20,816,117.30, 31,242,112.07 and 14,430,853.68
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Solution
The fourth proportional to 20,816,117.30, 31,242,112.07 and 14,430,853.68 is: 21,658,714.81
Step by Step Solution
- Step 1: Write the proportion equation
20,816,117.30 : 31,242,112.07 = 14,430,853.68 : x - Step 2: Convert to fraction form
20,816,117.30/31,242,112.07 = 14,430,853.68/x - Step 3: Cross multiply
20,816,117.30x = 31,242,112.07 × 14,430,853.68 - Step 4: Simplify right side
20,816,117.30x = 450,850,347,864,177.69 - Step 5: Solve for x
x = 450,850,347,864,177.69/20,816,117.30 - Step 6: Final answer
x = 21,658,714.81
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.