Finding the Fourth Proportional to 20,733,128.70, 31,099,693.05 and 9,218,573.70
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Solution
The fourth proportional to 20,733,128.70, 31,099,693.05 and 9,218,573.70 is: 13,827,860.55
Step by Step Solution
- Step 1: Write the proportion equation
20,733,128.70 : 31,099,693.05 = 9,218,573.70 : x - Step 2: Convert to fraction form
20,733,128.70/31,099,693.05 = 9,218,573.70/x - Step 3: Cross multiply
20,733,128.70x = 31,099,693.05 × 9,218,573.70 - Step 4: Simplify right side
20,733,128.70x = 286,694,812,428,802.75 - Step 5: Solve for x
x = 286,694,812,428,802.75/20,733,128.70 - Step 6: Final answer
x = 13,827,860.55
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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.