Finding the Fourth Proportional to 20,832,149.79, 28,758,335.51 and 13,874,406.12
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Solution
The fourth proportional to 20,832,149.79, 28,758,335.51 and 13,874,406.12 is: 19,153,319.76
Step by Step Solution
- Step 1: Write the proportion equation
20,832,149.79 : 28,758,335.51 = 13,874,406.12 : x - Step 2: Convert to fraction form
20,832,149.79/28,758,335.51 = 13,874,406.12/x - Step 3: Cross multiply
20,832,149.79x = 28,758,335.51 × 13,874,406.12 - Step 4: Simplify right side
20,832,149.79x = 399,004,826,200,957.31 - Step 5: Solve for x
x = 399,004,826,200,957.31/20,832,149.79 - Step 6: Final answer
x = 19,153,319.76
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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.