Finding the Fourth Proportional to 20,955,153.30, 28,901,703.91 and 13,615,370.80
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Solution
The fourth proportional to 20,955,153.30, 28,901,703.91 and 13,615,370.80 is: 18,778,551.02
Step by Step Solution
- Step 1: Write the proportion equation
20,955,153.30 : 28,901,703.91 = 13,615,370.80 : x - Step 2: Convert to fraction form
20,955,153.30/28,901,703.91 = 13,615,370.80/x - Step 3: Cross multiply
20,955,153.30x = 28,901,703.91 × 13,615,370.80 - Step 4: Simplify right side
20,955,153.30x = 393,507,415,405,695.94 - Step 5: Solve for x
x = 393,507,415,405,695.94/20,955,153.30 - Step 6: Final answer
x = 18,778,551.02
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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.