Finding the Fourth Proportional to 21,135,257.79, 31,692,894.37 and 8,187,472.84
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Solution
The fourth proportional to 21,135,257.79, 31,692,894.37 and 8,187,472.84 is: 12,277,338.39
Step by Step Solution
- Step 1: Write the proportion equation
21,135,257.79 : 31,692,894.37 = 8,187,472.84 : x - Step 2: Convert to fraction form
21,135,257.79/31,692,894.37 = 8,187,472.84/x - Step 3: Cross multiply
21,135,257.79x = 31,692,894.37 × 8,187,472.84 - Step 4: Simplify right side
21,135,257.79x = 259,484,711,875,363.91 - Step 5: Solve for x
x = 259,484,711,875,363.91/21,135,257.79 - Step 6: Final answer
x = 12,277,338.39
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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.