Finding the Fourth Proportional to 21,028,540.95, 31,545,026.37 and 8,731,107.99
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Solution
The fourth proportional to 21,028,540.95, 31,545,026.37 and 8,731,107.99 is: 13,097,581.64
Step by Step Solution
- Step 1: Write the proportion equation
21,028,540.95 : 31,545,026.37 = 8,731,107.99 : x - Step 2: Convert to fraction form
21,028,540.95/31,545,026.37 = 8,731,107.99/x - Step 3: Cross multiply
21,028,540.95x = 31,545,026.37 × 8,731,107.99 - Step 4: Simplify right side
21,028,540.95x = 275,423,031,783,867.72 - Step 5: Solve for x
x = 275,423,031,783,867.72/21,028,540.95 - Step 6: Final answer
x = 13,097,581.64
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.