Finding the Fourth Proportional to 15,787,960.12, 21,787,386.90 and 8,544,616.12
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Solution
The fourth proportional to 15,787,960.12, 21,787,386.90 and 8,544,616.12 is: 11,791,571.29
Step by Step Solution
- Step 1: Write the proportion equation
15,787,960.12 : 21,787,386.90 = 8,544,616.12 : x - Step 2: Convert to fraction form
15,787,960.12/21,787,386.90 = 8,544,616.12/x - Step 3: Cross multiply
15,787,960.12x = 21,787,386.90 × 8,544,616.12 - Step 4: Simplify right side
15,787,960.12x = 186,164,857,318,416.81 - Step 5: Solve for x
x = 186,164,857,318,416.81/15,787,960.12 - Step 6: Final answer
x = 11,791,571.29
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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.