Finding the Fourth Proportional to 15,781,121.28, 21,694,347 and 13,567,830.12
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Solution
The fourth proportional to 15,781,121.28, 21,694,347 and 13,567,830.12 is: 18,651,730.09
Step by Step Solution
- Step 1: Write the proportion equation
15,781,121.28 : 21,694,347 = 13,567,830.12 : x - Step 2: Convert to fraction form
15,781,121.28/21,694,347 = 13,567,830.12/x - Step 3: Cross multiply
15,781,121.28x = 21,694,347 × 13,567,830.12 - Step 4: Simplify right side
15,781,121.28x = 294,345,214,660,331.62 - Step 5: Solve for x
x = 294,345,214,660,331.62/15,781,121.28 - Step 6: Final answer
x = 18,651,730.09
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.