Finding the Fourth Proportional to 28,611,672.12, 39,485,143.71 and 16,390,891.08
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Solution
The fourth proportional to 28,611,672.12, 39,485,143.71 and 16,390,891.08 is: 22,620,023.29
Step by Step Solution
- Step 1: Write the proportion equation
28,611,672.12 : 39,485,143.71 = 16,390,891.08 : x - Step 2: Convert to fraction form
28,611,672.12/39,485,143.71 = 16,390,891.08/x - Step 3: Cross multiply
28,611,672.12x = 39,485,143.71 × 16,390,891.08 - Step 4: Simplify right side
28,611,672.12x = 647,196,689,828,757.12 - Step 5: Solve for x
x = 647,196,689,828,757.12/28,611,672.12 - Step 6: Final answer
x = 22,620,023.29
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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.