Finding the Fourth Proportional to 14,078,406.70, 19,428,201.40 and 7,639,878.70
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Solution
The fourth proportional to 14,078,406.70, 19,428,201.40 and 7,639,878.70 is: 10,543,032.69
Step by Step Solution
- Step 1: Write the proportion equation
14,078,406.70 : 19,428,201.40 = 7,639,878.70 : x - Step 2: Convert to fraction form
14,078,406.70/19,428,201.40 = 7,639,878.70/x - Step 3: Cross multiply
14,078,406.70x = 19,428,201.40 × 7,639,878.70 - Step 4: Simplify right side
14,078,406.70x = 148,429,102,055,170.19 - Step 5: Solve for x
x = 148,429,102,055,170.19/14,078,406.70 - Step 6: Final answer
x = 10,543,032.69
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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.