Finding the Fourth Proportional to 15,507,315.09, 21,399,743.21 and 9,709,296.21
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Solution
The fourth proportional to 15,507,315.09, 21,399,743.21 and 9,709,296.21 is: 13,398,608.62
Step by Step Solution
- Step 1: Write the proportion equation
15,507,315.09 : 21,399,743.21 = 9,709,296.21 : x - Step 2: Convert to fraction form
15,507,315.09/21,399,743.21 = 9,709,296.21/x - Step 3: Cross multiply
15,507,315.09x = 21,399,743.21 × 9,709,296.21 - Step 4: Simplify right side
15,507,315.09x = 207,776,445,643,826.25 - Step 5: Solve for x
x = 207,776,445,643,826.25/15,507,315.09 - Step 6: Final answer
x = 13,398,608.62
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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.