Finding the Fourth Proportional to 11,688,975.81, 16,129,389.60 and 6,461,277.80
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Solution
The fourth proportional to 11,688,975.81, 16,129,389.60 and 6,461,277.80 is: 8,915,791.13
Step by Step Solution
- Step 1: Write the proportion equation
11,688,975.81 : 16,129,389.60 = 6,461,277.80 : x - Step 2: Convert to fraction form
11,688,975.81/16,129,389.60 = 6,461,277.80/x - Step 3: Cross multiply
11,688,975.81x = 16,129,389.60 × 6,461,277.80 - Step 4: Simplify right side
11,688,975.81x = 104,216,466,869,383.92 - Step 5: Solve for x
x = 104,216,466,869,383.92/11,688,975.81 - Step 6: Final answer
x = 8,915,791.13
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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.