Finding the Fourth Proportional to 21,248,309.21, 31,878,968.49 and 10,880,868.80
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Solution
The fourth proportional to 21,248,309.21, 31,878,968.49 and 10,880,868.80 is: 16,324,634.12
Step by Step Solution
- Step 1: Write the proportion equation
21,248,309.21 : 31,878,968.49 = 10,880,868.80 : x - Step 2: Convert to fraction form
21,248,309.21/31,878,968.49 = 10,880,868.80/x - Step 3: Cross multiply
21,248,309.21x = 31,878,968.49 × 10,880,868.80 - Step 4: Simplify right side
21,248,309.21x = 346,870,873,564,619.81 - Step 5: Solve for x
x = 346,870,873,564,619.81/21,248,309.21 - Step 6: Final answer
x = 16,324,634.12
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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.