Finding the Fourth Proportional to 13,337,047.12, 18,405,143.70 and 7,225,475.62
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Solution
The fourth proportional to 13,337,047.12, 18,405,143.70 and 7,225,475.62 is: 9,971,166.47
Step by Step Solution
- Step 1: Write the proportion equation
13,337,047.12 : 18,405,143.70 = 7,225,475.62 : x - Step 2: Convert to fraction form
13,337,047.12/18,405,143.70 = 7,225,475.62/x - Step 3: Cross multiply
13,337,047.12x = 18,405,143.70 × 7,225,475.62 - Step 4: Simplify right side
13,337,047.12x = 132,985,917,086,946.59 - Step 5: Solve for x
x = 132,985,917,086,946.59/13,337,047.12 - Step 6: Final answer
x = 9,971,166.47
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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.