Finding the Fourth Proportional to 18,356,722.80, 27,545,581.80 and 12,681,020.40
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Solution
The fourth proportional to 18,356,722.80, 27,545,581.80 and 12,681,020.40 is: 19,028,782.45
Step by Step Solution
- Step 1: Write the proportion equation
18,356,722.80 : 27,545,581.80 = 12,681,020.40 : x - Step 2: Convert to fraction form
18,356,722.80/27,545,581.80 = 12,681,020.40/x - Step 3: Cross multiply
18,356,722.80x = 27,545,581.80 × 12,681,020.40 - Step 4: Simplify right side
18,356,722.80x = 349,306,084,735,668.75 - Step 5: Solve for x
x = 349,306,084,735,668.75/18,356,722.80 - Step 6: Final answer
x = 19,028,782.45
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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.