Finding the Fourth Proportional to 13,556,509.99, 18,707,915.80 and 7,361,501.37
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Solution
The fourth proportional to 13,556,509.99, 18,707,915.80 and 7,361,501.37 is: 10,158,834.97
Step by Step Solution
- Step 1: Write the proportion equation
13,556,509.99 : 18,707,915.80 = 7,361,501.37 : x - Step 2: Convert to fraction form
13,556,509.99/18,707,915.80 = 7,361,501.37/x - Step 3: Cross multiply
13,556,509.99x = 18,707,915.80 × 7,361,501.37 - Step 4: Simplify right side
13,556,509.99x = 137,718,347,763,178.59 - Step 5: Solve for x
x = 137,718,347,763,178.59/13,556,509.99 - Step 6: Final answer
x = 10,158,834.97
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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.