Finding the Fourth Proportional to 13,515,422.76, 18,651,749.58 and 7,403,851.80
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Solution
The fourth proportional to 13,515,422.76, 18,651,749.58 and 7,403,851.80 is: 10,217,570.86
Step by Step Solution
- Step 1: Write the proportion equation
13,515,422.76 : 18,651,749.58 = 7,403,851.80 : x - Step 2: Convert to fraction form
13,515,422.76/18,651,749.58 = 7,403,851.80/x - Step 3: Cross multiply
13,515,422.76x = 18,651,749.58 × 7,403,851.80 - Step 4: Simplify right side
13,515,422.76x = 138,094,789,701,032.23 - Step 5: Solve for x
x = 138,094,789,701,032.23/13,515,422.76 - Step 6: Final answer
x = 10,217,570.86
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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.