Finding the Fourth Proportional to 13,361,021.80, 18,438,424.41 and 7,249,450.30
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Solution
The fourth proportional to 13,361,021.80, 18,438,424.41 and 7,249,450.30 is: 10,004,357.70
Step by Step Solution
- Step 1: Write the proportion equation
13,361,021.80 : 18,438,424.41 = 7,249,450.30 : x - Step 2: Convert to fraction form
13,361,021.80/18,438,424.41 = 7,249,450.30/x - Step 3: Cross multiply
13,361,021.80x = 18,438,424.41 × 7,249,450.30 - Step 4: Simplify right side
13,361,021.80x = 133,668,441,370,601.83 - Step 5: Solve for x
x = 133,668,441,370,601.83/13,361,021.80 - Step 6: Final answer
x = 10,004,357.70
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1.5x scale
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.