Finding the Fourth Proportional to 21,211,746.66, 31,792,936.05 and 12,120,212.70
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Solution
The fourth proportional to 21,211,746.66, 31,792,936.05 and 12,120,212.70 is: 18,166,214.86
Step by Step Solution
- Step 1: Write the proportion equation
21,211,746.66 : 31,792,936.05 = 12,120,212.70 : x - Step 2: Convert to fraction form
21,211,746.66/31,792,936.05 = 12,120,212.70/x - Step 3: Cross multiply
21,211,746.66x = 31,792,936.05 × 12,120,212.70 - Step 4: Simplify right side
21,211,746.66x = 385,337,147,283,497.81 - Step 5: Solve for x
x = 385,337,147,283,497.81/21,211,746.66 - Step 6: Final answer
x = 18,166,214.86
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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.