Finding the Fourth Proportional to 14,652,486.19, 20,221,673.07 and 8,128,217.76
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Solution
The fourth proportional to 14,652,486.19, 20,221,673.07 and 8,128,217.76 is: 11,217,629.56
Step by Step Solution
- Step 1: Write the proportion equation
14,652,486.19 : 20,221,673.07 = 8,128,217.76 : x - Step 2: Convert to fraction form
14,652,486.19/20,221,673.07 = 8,128,217.76/x - Step 3: Cross multiply
14,652,486.19x = 20,221,673.07 × 8,128,217.76 - Step 4: Simplify right side
14,652,486.19x = 164,366,162,143,846.66 - Step 5: Solve for x
x = 164,366,162,143,846.66/14,652,486.19 - Step 6: Final answer
x = 11,217,629.56
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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.