Finding the Fourth Proportional to 19,708,639.31, 27,000,384.79 and 18,971,783.12
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Solution
The fourth proportional to 19,708,639.31, 27,000,384.79 and 18,971,783.12 is: 25,990,908.67
Step by Step Solution
- Step 1: Write the proportion equation
19,708,639.31 : 27,000,384.79 = 18,971,783.12 : x - Step 2: Convert to fraction form
19,708,639.31/27,000,384.79 = 18,971,783.12/x - Step 3: Cross multiply
19,708,639.31x = 27,000,384.79 × 18,971,783.12 - Step 4: Simplify right side
19,708,639.31x = 512,245,444,392,426.75 - Step 5: Solve for x
x = 512,245,444,392,426.75/19,708,639.31 - Step 6: Final answer
x = 25,990,908.67
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.