Finding the Fourth Proportional to 13,659,890.49, 18,850,655.61 and 7,548,318.99
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Solution
The fourth proportional to 13,659,890.49, 18,850,655.61 and 7,548,318.99 is: 10,416,683.93
Step by Step Solution
- Step 1: Write the proportion equation
13,659,890.49 : 18,850,655.61 = 7,548,318.99 : x - Step 2: Convert to fraction form
13,659,890.49/18,850,655.61 = 7,548,318.99/x - Step 3: Cross multiply
13,659,890.49x = 18,850,655.61 × 7,548,318.99 - Step 4: Simplify right side
13,659,890.49x = 142,290,761,714,913.03 - Step 5: Solve for x
x = 142,290,761,714,913.03/13,659,890.49 - Step 6: Final answer
x = 10,416,683.93
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.