Finding the Fourth Proportional to 14,689,440.76, 20,271,919.93 and 8,163,345.28
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Solution
The fourth proportional to 14,689,440.76, 20,271,919.93 and 8,163,345.28 is: 11,265,689.73
Step by Step Solution
- Step 1: Write the proportion equation
14,689,440.76 : 20,271,919.93 = 8,163,345.28 : x - Step 2: Convert to fraction form
14,689,440.76/20,271,919.93 = 8,163,345.28/x - Step 3: Cross multiply
14,689,440.76x = 20,271,919.93 × 8,163,345.28 - Step 4: Simplify right side
14,689,440.76x = 165,486,681,877,103.44 - Step 5: Solve for x
x = 165,486,681,877,103.44/14,689,440.76 - Step 6: Final answer
x = 11,265,689.73
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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.