Finding the Fourth Proportional to 19,907,351.60, 29,861,027.40 and 7,128,273.20
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Solution
The fourth proportional to 19,907,351.60, 29,861,027.40 and 7,128,273.20 is: 10,692,409.80
Step by Step Solution
- Step 1: Write the proportion equation
19,907,351.60 : 29,861,027.40 = 7,128,273.20 : x - Step 2: Convert to fraction form
19,907,351.60/29,861,027.40 = 7,128,273.20/x - Step 3: Cross multiply
19,907,351.60x = 29,861,027.40 × 7,128,273.20 - Step 4: Simplify right side
19,907,351.60x = 212,857,561,339,885.69 - Step 5: Solve for x
x = 212,857,561,339,885.69/19,907,351.60 - Step 6: Final answer
x = 10,692,409.80
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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.