Finding the Fourth Proportional to 15,287,840.98, 21,096,583.40 and 8,318,545.90
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Solution
The fourth proportional to 15,287,840.98, 21,096,583.40 and 8,318,545.90 is: 11,479,246.65
Step by Step Solution
- Step 1: Write the proportion equation
15,287,840.98 : 21,096,583.40 = 8,318,545.90 : x - Step 2: Convert to fraction form
15,287,840.98/21,096,583.40 = 8,318,545.90/x - Step 3: Cross multiply
15,287,840.98x = 21,096,583.40 × 8,318,545.90 - Step 4: Simplify right side
15,287,840.98x = 175,492,897,346,078.06 - Step 5: Solve for x
x = 175,492,897,346,078.06/15,287,840.98 - Step 6: Final answer
x = 11,479,246.65
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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.