Finding the Fourth Proportional to 20,836,428.18, 31,255,823.25 and 6,461,539.62
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Solution
The fourth proportional to 20,836,428.18, 31,255,823.25 and 6,461,539.62 is: 9,692,675.65
Step by Step Solution
- Step 1: Write the proportion equation
20,836,428.18 : 31,255,823.25 = 6,461,539.62 : x - Step 2: Convert to fraction form
20,836,428.18/31,255,823.25 = 6,461,539.62/x - Step 3: Cross multiply
20,836,428.18x = 31,255,823.25 × 6,461,539.62 - Step 4: Simplify right side
20,836,428.18x = 201,960,740,097,005.38 - Step 5: Solve for x
x = 201,960,740,097,005.38/20,836,428.18 - Step 6: Final answer
x = 9,692,675.65
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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.