Finding the Fourth Proportional to 13,202,979.99, 18,220,986.99 and 7,402,137.45
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Solution
The fourth proportional to 13,202,979.99, 18,220,986.99 and 7,402,137.45 is: 10,215,440.02
Step by Step Solution
- Step 1: Write the proportion equation
13,202,979.99 : 18,220,986.99 = 7,402,137.45 : x - Step 2: Convert to fraction form
13,202,979.99/18,220,986.99 = 7,402,137.45/x - Step 3: Cross multiply
13,202,979.99x = 18,220,986.99 × 7,402,137.45 - Step 4: Simplify right side
13,202,979.99x = 134,874,250,174,641.77 - Step 5: Solve for x
x = 134,874,250,174,641.77/13,202,979.99 - Step 6: Final answer
x = 10,215,440.02
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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.