Finding the Fourth Proportional to 13,029,362.99, 17,980,542.11 and 7,228,144.79
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Solution
The fourth proportional to 13,029,362.99, 17,980,542.11 and 7,228,144.79 is: 9,974,851.57
Step by Step Solution
- Step 1: Write the proportion equation
13,029,362.99 : 17,980,542.11 = 7,228,144.79 : x - Step 2: Convert to fraction form
13,029,362.99/17,980,542.11 = 7,228,144.79/x - Step 3: Cross multiply
13,029,362.99x = 17,980,542.11 × 7,228,144.79 - Step 4: Simplify right side
13,029,362.99x = 129,965,961,870,507.34 - Step 5: Solve for x
x = 129,965,961,870,507.34/13,029,362.99 - Step 6: Final answer
x = 9,974,851.57
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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.