Finding the Fourth Proportional to 20,890,927.08, 28,832,295.06 and 11,724,072.84
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Solution
The fourth proportional to 20,890,927.08, 28,832,295.06 and 11,724,072.84 is: 16,180,800.70
Step by Step Solution
- Step 1: Write the proportion equation
20,890,927.08 : 28,832,295.06 = 11,724,072.84 : x - Step 2: Convert to fraction form
20,890,927.08/28,832,295.06 = 11,724,072.84/x - Step 3: Cross multiply
20,890,927.08x = 28,832,295.06 × 11,724,072.84 - Step 4: Simplify right side
20,890,927.08x = 338,031,927,427,812.12 - Step 5: Solve for x
x = 338,031,927,427,812.12/20,890,927.08 - Step 6: Final answer
x = 16,180,800.70
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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.