Finding the Fourth Proportional to 19,553,971.32, 26,987,725.80 and 11,405,209.32
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Solution
The fourth proportional to 19,553,971.32, 26,987,725.80 and 11,405,209.32 is: 15,741,081.79
Step by Step Solution
- Step 1: Write the proportion equation
19,553,971.32 : 26,987,725.80 = 11,405,209.32 : x - Step 2: Convert to fraction form
19,553,971.32/26,987,725.80 = 11,405,209.32/x - Step 3: Cross multiply
19,553,971.32x = 26,987,725.80 × 11,405,209.32 - Step 4: Simplify right side
19,553,971.32x = 307,800,661,819,764.50 - Step 5: Solve for x
x = 307,800,661,819,764.50/19,553,971.32 - Step 6: Final answer
x = 15,741,081.79
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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.