Finding the Fourth Proportional to 18,192,643.20, 27,288,964.80 and 13,064,237.55
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Solution
The fourth proportional to 18,192,643.20, 27,288,964.80 and 13,064,237.55 is: 19,596,356.33
Step by Step Solution
- Step 1: Write the proportion equation
18,192,643.20 : 27,288,964.80 = 13,064,237.55 : x - Step 2: Convert to fraction form
18,192,643.20/27,288,964.80 = 13,064,237.55/x - Step 3: Cross multiply
18,192,643.20x = 27,288,964.80 × 13,064,237.55 - Step 4: Simplify right side
18,192,643.20x = 356,509,518,640,788.25 - Step 5: Solve for x
x = 356,509,518,640,788.25/18,192,643.20 - Step 6: Final answer
x = 19,596,356.33
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.