Finding the Fourth Proportional to 20,708,428.55, 31,062,642.82 and 6,331,496.36
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Solution
The fourth proportional to 20,708,428.55, 31,062,642.82 and 6,331,496.36 is: 9,497,244.53
Step by Step Solution
- Step 1: Write the proportion equation
20,708,428.55 : 31,062,642.82 = 6,331,496.36 : x - Step 2: Convert to fraction form
20,708,428.55/31,062,642.82 = 6,331,496.36/x - Step 3: Cross multiply
20,708,428.55x = 31,062,642.82 × 6,331,496.36 - Step 4: Simplify right side
20,708,428.55x = 196,673,009,775,668.19 - Step 5: Solve for x
x = 196,673,009,775,668.19/20,708,428.55 - Step 6: Final answer
x = 9,497,244.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.