Finding the Fourth Proportional to 21,357,819.06, 29,465,655.30 and 15,789,436.26
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Solution
The fourth proportional to 21,357,819.06, 29,465,655.30 and 15,789,436.26 is: 21,783,407.98
Step by Step Solution
- Step 1: Write the proportion equation
21,357,819.06 : 29,465,655.30 = 15,789,436.26 : x - Step 2: Convert to fraction form
21,357,819.06/29,465,655.30 = 15,789,436.26/x - Step 3: Cross multiply
21,357,819.06x = 29,465,655.30 × 15,789,436.26 - Step 4: Simplify right side
21,357,819.06x = 465,246,086,218,481.19 - Step 5: Solve for x
x = 465,246,086,218,481.19/21,357,819.06 - Step 6: Final answer
x = 21,783,407.98
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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.