Finding the Fourth Proportional to 18,172,890.30, 27,232,763.40 and 15,462,541.20
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Solution
The fourth proportional to 18,172,890.30, 27,232,763.40 and 15,462,541.20 is: 23,171,202.77
Step by Step Solution
- Step 1: Write the proportion equation
18,172,890.30 : 27,232,763.40 = 15,462,541.20 : x - Step 2: Convert to fraction form
18,172,890.30/27,232,763.40 = 15,462,541.20/x - Step 3: Cross multiply
18,172,890.30x = 27,232,763.40 × 15,462,541.20 - Step 4: Simplify right side
18,172,890.30x = 421,087,726,062,352.06 - Step 5: Solve for x
x = 421,087,726,062,352.06/18,172,890.30 - Step 6: Final answer
x = 23,171,202.77
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.