Finding the Fourth Proportional to 27,513,815.67, 37,968,639.97 and 15,123,643.97
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Solution
The fourth proportional to 27,513,815.67, 37,968,639.97 and 15,123,643.97 is: 20,870,394.70
Step by Step Solution
- Step 1: Write the proportion equation
27,513,815.67 : 37,968,639.97 = 15,123,643.97 : x - Step 2: Convert to fraction form
27,513,815.67/37,968,639.97 = 15,123,643.97/x - Step 3: Cross multiply
27,513,815.67x = 37,968,639.97 × 15,123,643.97 - Step 4: Simplify right side
27,513,815.67x = 574,224,192,742,990.12 - Step 5: Solve for x
x = 574,224,192,742,990.12/27,513,815.67 - Step 6: Final answer
x = 20,870,394.70
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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.