Finding the Fourth Proportional to 18,709,963.92, 25,819,750.14 and 10,125,259.92
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Solution
The fourth proportional to 18,709,963.92, 25,819,750.14 and 10,125,259.92 is: 13,972,858.65
Step by Step Solution
- Step 1: Write the proportion equation
18,709,963.92 : 25,819,750.14 = 10,125,259.92 : x - Step 2: Convert to fraction form
18,709,963.92/25,819,750.14 = 10,125,259.92/x - Step 3: Cross multiply
18,709,963.92x = 25,819,750.14 × 10,125,259.92 - Step 4: Simplify right side
18,709,963.92x = 261,431,681,236,956.41 - Step 5: Solve for x
x = 261,431,681,236,956.41/18,709,963.92 - Step 6: Final answer
x = 13,972,858.65
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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.