Finding the Fourth Proportional to 20,368,816.74, 28,108,406.57 and 11,201,459.49
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Solution
The fourth proportional to 20,368,816.74, 28,108,406.57 and 11,201,459.49 is: 15,457,705.84
Step by Step Solution
- Step 1: Write the proportion equation
20,368,816.74 : 28,108,406.57 = 11,201,459.49 : x - Step 2: Convert to fraction form
20,368,816.74/28,108,406.57 = 11,201,459.49/x - Step 3: Cross multiply
20,368,816.74x = 28,108,406.57 × 11,201,459.49 - Step 4: Simplify right side
20,368,816.74x = 314,855,177,466,297.56 - Step 5: Solve for x
x = 314,855,177,466,297.56/20,368,816.74 - Step 6: Final answer
x = 15,457,705.84
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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.