Finding the Fourth Proportional to 11,386,423.80, 15,696,921.78 and 8,117,563.43
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Solution
The fourth proportional to 11,386,423.80, 15,696,921.78 and 8,117,563.43 is: 11,190,586.31
Step by Step Solution
- Step 1: Write the proportion equation
11,386,423.80 : 15,696,921.78 = 8,117,563.43 : x - Step 2: Convert to fraction form
11,386,423.80/15,696,921.78 = 8,117,563.43/x - Step 3: Cross multiply
11,386,423.80x = 15,696,921.78 × 8,117,563.43 - Step 4: Simplify right side
11,386,423.80x = 127,420,758,244,140.81 - Step 5: Solve for x
x = 127,420,758,244,140.81/11,386,423.80 - Step 6: Final answer
x = 11,190,586.31
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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.