Finding the Fourth Proportional to 12,291.47, 16,964.19 and 6,987.99
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Solution
The fourth proportional to 12,291.47, 16,964.19 and 6,987.99 is: 9,644.55
Step by Step Solution
- Step 1: Write the proportion equation
12,291.47 : 16,964.19 = 6,987.99 : x - Step 2: Convert to fraction form
12,291.47/16,964.19 = 6,987.99/x - Step 3: Cross multiply
12,291.47x = 16,964.19 × 6,987.99 - Step 4: Simplify right side
12,291.47x = 118,545,590.08 - Step 5: Solve for x
x = 118,545,590.08/12,291.47 - Step 6: Final answer
x = 9,644.55
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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.