Finding the Fourth Proportional to 18,120,947.68, 25,006,911.36 and 9,972,185.68
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Solution
The fourth proportional to 18,120,947.68, 25,006,911.36 and 9,972,185.68 is: 13,761,618.20
Step by Step Solution
- Step 1: Write the proportion equation
18,120,947.68 : 25,006,911.36 = 9,972,185.68 : x - Step 2: Convert to fraction form
18,120,947.68/25,006,911.36 = 9,972,185.68/x - Step 3: Cross multiply
18,120,947.68x = 25,006,911.36 × 9,972,185.68 - Step 4: Simplify right side
18,120,947.68x = 249,373,563,365,221.31 - Step 5: Solve for x
x = 249,373,563,365,221.31/18,120,947.68 - Step 6: Final answer
x = 13,761,618.20
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1.5x scale
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.