Finding the Fourth Proportional to 21,108,749.56, 29,130,130.47 and 11,450,957.56
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Solution
The fourth proportional to 21,108,749.56, 29,130,130.47 and 11,450,957.56 is: 15,802,351.85
Step by Step Solution
- Step 1: Write the proportion equation
21,108,749.56 : 29,130,130.47 = 11,450,957.56 : x - Step 2: Convert to fraction form
21,108,749.56/29,130,130.47 = 11,450,957.56/x - Step 3: Cross multiply
21,108,749.56x = 29,130,130.47 × 11,450,957.56 - Step 4: Simplify right side
21,108,749.56x = 333,567,887,729,232.88 - Step 5: Solve for x
x = 333,567,887,729,232.88/21,108,749.56 - Step 6: Final answer
x = 15,802,351.85
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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.