Finding the Fourth Proportional to 11,691,478.40, 17,518,555.20 and 9,787,913.60
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Solution
The fourth proportional to 11,691,478.40, 17,518,555.20 and 9,787,913.60 is: 14,666,246.55
Step by Step Solution
- Step 1: Write the proportion equation
11,691,478.40 : 17,518,555.20 = 9,787,913.60 : x - Step 2: Convert to fraction form
11,691,478.40/17,518,555.20 = 9,787,913.60/x - Step 3: Cross multiply
11,691,478.40x = 17,518,555.20 × 9,787,913.60 - Step 4: Simplify right side
11,691,478.40x = 171,470,104,694,430.72 - Step 5: Solve for x
x = 171,470,104,694,430.72/11,691,478.40 - Step 6: Final answer
x = 14,666,246.55
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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.