Finding the Fourth Proportional to 12,964,467.99, 17,890,929.09 and 7,163,208.40
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Solution
The fourth proportional to 12,964,467.99, 17,890,929.09 and 7,163,208.40 is: 9,885,207.29
Step by Step Solution
- Step 1: Write the proportion equation
12,964,467.99 : 17,890,929.09 = 7,163,208.40 : x - Step 2: Convert to fraction form
12,964,467.99/17,890,929.09 = 7,163,208.40/x - Step 3: Cross multiply
12,964,467.99x = 17,890,929.09 × 7,163,208.40 - Step 4: Simplify right side
12,964,467.99x = 128,156,453,541,292.36 - Step 5: Solve for x
x = 128,156,453,541,292.36/12,964,467.99 - Step 6: Final answer
x = 9,885,207.29
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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.