Finding the Fourth Proportional to 21,215,120.88, 31,805,518.41 and 6,634,538.81
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Solution
The fourth proportional to 21,215,120.88, 31,805,518.41 and 6,634,538.81 is: 9,946,440.91
Step by Step Solution
- Step 1: Write the proportion equation
21,215,120.88 : 31,805,518.41 = 6,634,538.81 : x - Step 2: Convert to fraction form
21,215,120.88/31,805,518.41 = 6,634,538.81/x - Step 3: Cross multiply
21,215,120.88x = 31,805,518.41 × 6,634,538.81 - Step 4: Simplify right side
21,215,120.88x = 211,014,946,263,314.47 - Step 5: Solve for x
x = 211,014,946,263,314.47/21,215,120.88 - Step 6: Final answer
x = 9,946,440.91
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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.