Finding the Fourth Proportional to 20,760,920.84, 28,650,881.58 and 11,468,970.20
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Solution
The fourth proportional to 20,760,920.84, 28,650,881.58 and 11,468,970.20 is: 15,827,626.80
Step by Step Solution
- Step 1: Write the proportion equation
20,760,920.84 : 28,650,881.58 = 11,468,970.20 : x - Step 2: Convert to fraction form
20,760,920.84/28,650,881.58 = 11,468,970.20/x - Step 3: Cross multiply
20,760,920.84x = 28,650,881.58 × 11,468,970.20 - Step 4: Simplify right side
20,760,920.84x = 328,596,107,044,748.88 - Step 5: Solve for x
x = 328,596,107,044,748.88/20,760,920.84 - Step 6: Final answer
x = 15,827,626.80
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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.