Finding the Fourth Proportional to 13,282,732.21, 18,330,272.80 and 7,480,971.13
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Solution
The fourth proportional to 13,282,732.21, 18,330,272.80 and 7,480,971.13 is: 10,323,797.80
Step by Step Solution
- Step 1: Write the proportion equation
13,282,732.21 : 18,330,272.80 = 7,480,971.13 : x - Step 2: Convert to fraction form
13,282,732.21/18,330,272.80 = 7,480,971.13/x - Step 3: Cross multiply
13,282,732.21x = 18,330,272.80 × 7,480,971.13 - Step 4: Simplify right side
13,282,732.21x = 137,128,241,621,824.27 - Step 5: Solve for x
x = 137,128,241,621,824.27/13,282,732.21 - Step 6: Final answer
x = 10,323,797.80
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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.