Finding the Fourth Proportional to 13,438,331.74, 18,544,363.70 and 7,933,479.87
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Solution
The fourth proportional to 13,438,331.74, 18,544,363.70 and 7,933,479.87 is: 10,947,886.91
Step by Step Solution
- Step 1: Write the proportion equation
13,438,331.74 : 18,544,363.70 = 7,933,479.87 : x - Step 2: Convert to fraction form
13,438,331.74/18,544,363.70 = 7,933,479.87/x - Step 3: Cross multiply
13,438,331.74x = 18,544,363.70 × 7,933,479.87 - Step 4: Simplify right side
13,438,331.74x = 147,121,336,115,908.72 - Step 5: Solve for x
x = 147,121,336,115,908.72/13,438,331.74 - Step 6: Final answer
x = 10,947,886.91
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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.