Finding the Fourth Proportional to 19,681,788.10, 27,160,879.24 and 10,979,960.70
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Solution
The fourth proportional to 19,681,788.10, 27,160,879.24 and 10,979,960.70 is: 15,152,352.27
Step by Step Solution
- Step 1: Write the proportion equation
19,681,788.10 : 27,160,879.24 = 10,979,960.70 : x - Step 2: Convert to fraction form
19,681,788.10/27,160,879.24 = 10,979,960.70/x - Step 3: Cross multiply
19,681,788.10x = 27,160,879.24 × 10,979,960.70 - Step 4: Simplify right side
19,681,788.10x = 298,225,386,632,645.81 - Step 5: Solve for x
x = 298,225,386,632,645.81/19,681,788.10 - Step 6: Final answer
x = 15,152,352.27
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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.