Finding the Fourth Proportional to 18,147,628.49, 27,221,417.84 and 8,426,925.90
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Solution
The fourth proportional to 18,147,628.49, 27,221,417.84 and 8,426,925.90 is: 12,640,377.29
Step by Step Solution
- Step 1: Write the proportion equation
18,147,628.49 : 27,221,417.84 = 8,426,925.90 : x - Step 2: Convert to fraction form
18,147,628.49/27,221,417.84 = 8,426,925.90/x - Step 3: Cross multiply
18,147,628.49x = 27,221,417.84 × 8,426,925.90 - Step 4: Simplify right side
18,147,628.49x = 229,392,870,988,483.44 - Step 5: Solve for x
x = 229,392,870,988,483.44/18,147,628.49 - Step 6: Final answer
x = 12,640,377.29
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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.