Finding the Fourth Proportional to 21,153,440.70, 29,197,801.62 and 12,456,657.86
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Solution
The fourth proportional to 21,153,440.70, 29,197,801.62 and 12,456,657.86 is: 17,193,752.55
Step by Step Solution
- Step 1: Write the proportion equation
21,153,440.70 : 29,197,801.62 = 12,456,657.86 : x - Step 2: Convert to fraction form
21,153,440.70/29,197,801.62 = 12,456,657.86/x - Step 3: Cross multiply
21,153,440.70x = 29,197,801.62 × 12,456,657.86 - Step 4: Simplify right side
21,153,440.70x = 363,707,025,044,493.75 - Step 5: Solve for x
x = 363,707,025,044,493.75/21,153,440.70 - Step 6: Final answer
x = 17,193,752.55
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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.