Finding the Fourth Proportional to 21,009,387.09, 28,992,954.24 and 11,351,595.09
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Solution
The fourth proportional to 21,009,387.09, 28,992,954.24 and 11,351,595.09 is: 15,665,201.25
Step by Step Solution
- Step 1: Write the proportion equation
21,009,387.09 : 28,992,954.24 = 11,351,595.09 : x - Step 2: Convert to fraction form
21,009,387.09/28,992,954.24 = 11,351,595.09/x - Step 3: Cross multiply
21,009,387.09x = 28,992,954.24 × 11,351,595.09 - Step 4: Simplify right side
21,009,387.09x = 329,116,276,995,378.69 - Step 5: Solve for x
x = 329,116,276,995,378.69/21,009,387.09 - Step 6: Final answer
x = 15,665,201.25
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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.