Finding the Fourth Proportional to 19,761,813.42, 29,651,198.20 and 7,639,790.48
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Solution
The fourth proportional to 19,761,813.42, 29,651,198.20 and 7,639,790.48 is: 11,462,963.29
Step by Step Solution
- Step 1: Write the proportion equation
19,761,813.42 : 29,651,198.20 = 7,639,790.48 : x - Step 2: Convert to fraction form
19,761,813.42/29,651,198.20 = 7,639,790.48/x - Step 3: Cross multiply
19,761,813.42x = 29,651,198.20 × 7,639,790.48 - Step 4: Simplify right side
19,761,813.42x = 226,528,941,728,953.16 - Step 5: Solve for x
x = 226,528,941,728,953.16/19,761,813.42 - Step 6: Final answer
x = 11,462,963.29
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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.