Finding the Fourth Proportional to 15,317,686.26, 21,137,784.82 and 8,348,215.84
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Solution
The fourth proportional to 15,317,686.26, 21,137,784.82 and 8,348,215.84 is: 11,520,198.75
Step by Step Solution
- Step 1: Write the proportion equation
15,317,686.26 : 21,137,784.82 = 8,348,215.84 : x - Step 2: Convert to fraction form
15,317,686.26/21,137,784.82 = 8,348,215.84/x - Step 3: Cross multiply
15,317,686.26x = 21,137,784.82 × 8,348,215.84 - Step 4: Simplify right side
15,317,686.26x = 176,462,790,056,835.56 - Step 5: Solve for x
x = 176,462,790,056,835.56/15,317,686.26 - Step 6: Final answer
x = 11,520,198.75
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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.