Finding the Fourth Proportional to 12,121,428.92, 16,727,927.21 and 6,615,157.80
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Solution
The fourth proportional to 12,121,428.92, 16,727,927.21 and 6,615,157.80 is: 9,129,111.67
Step by Step Solution
- Step 1: Write the proportion equation
12,121,428.92 : 16,727,927.21 = 6,615,157.80 : x - Step 2: Convert to fraction form
12,121,428.92/16,727,927.21 = 6,615,157.80/x - Step 3: Cross multiply
12,121,428.92x = 16,727,927.21 × 6,615,157.80 - Step 4: Simplify right side
12,121,428.92x = 110,657,878,177,601.62 - Step 5: Solve for x
x = 110,657,878,177,601.62/12,121,428.92 - Step 6: Final answer
x = 9,129,111.67
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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.