Finding the Fourth Proportional to 13,121,246.96, 18,107,328.51 and 7,320,028.72
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Solution
The fourth proportional to 13,121,246.96, 18,107,328.51 and 7,320,028.72 is: 10,101,643.93
Step by Step Solution
- Step 1: Write the proportion equation
13,121,246.96 : 18,107,328.51 = 7,320,028.72 : x - Step 2: Convert to fraction form
13,121,246.96/18,107,328.51 = 7,320,028.72/x - Step 3: Cross multiply
13,121,246.96x = 18,107,328.51 × 7,320,028.72 - Step 4: Simplify right side
13,121,246.96x = 132,546,164,735,674.81 - Step 5: Solve for x
x = 132,546,164,735,674.81/13,121,246.96 - Step 6: Final answer
x = 10,101,643.93
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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.