Finding the Fourth Proportional to 20,746,717.28, 28,596,203.52 and 13,868,689.76
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Solution
The fourth proportional to 20,746,717.28, 28,596,203.52 and 13,868,689.76 is: 19,115,885.64
Step by Step Solution
- Step 1: Write the proportion equation
20,746,717.28 : 28,596,203.52 = 13,868,689.76 : x - Step 2: Convert to fraction form
20,746,717.28/28,596,203.52 = 13,868,689.76/x - Step 3: Cross multiply
20,746,717.28x = 28,596,203.52 × 13,868,689.76 - Step 4: Simplify right side
20,746,717.28x = 396,591,874,932,699.94 - Step 5: Solve for x
x = 396,591,874,932,699.94/20,746,717.28 - Step 6: Final answer
x = 19,115,885.64
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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.