Finding the Fourth Proportional to 12,964,466.99, 17,890,927.71 and 7,163,207.40
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Solution
The fourth proportional to 12,964,466.99, 17,890,927.71 and 7,163,207.40 is: 9,885,205.91
Step by Step Solution
- Step 1: Write the proportion equation
12,964,466.99 : 17,890,927.71 = 7,163,207.40 : x - Step 2: Convert to fraction form
12,964,466.99/17,890,927.71 = 7,163,207.40/x - Step 3: Cross multiply
12,964,466.99x = 17,890,927.71 × 7,163,207.40 - Step 4: Simplify right side
12,964,466.99x = 128,156,425,765,137.06 - Step 5: Solve for x
x = 128,156,425,765,137.06/12,964,466.99 - Step 6: Final answer
x = 9,885,205.91
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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.