Finding the Fourth Proportional to 13,148,390.36, 18,144,430.62 and 7,347,219.68
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Solution
The fourth proportional to 13,148,390.36, 18,144,430.62 and 7,347,219.68 is: 10,138,968.66
Step by Step Solution
- Step 1: Write the proportion equation
13,148,390.36 : 18,144,430.62 = 7,347,219.68 : x - Step 2: Convert to fraction form
13,148,390.36/18,144,430.62 = 7,347,219.68/x - Step 3: Cross multiply
13,148,390.36x = 18,144,430.62 × 7,347,219.68 - Step 4: Simplify right side
13,148,390.36x = 133,311,117,733,658.61 - Step 5: Solve for x
x = 133,311,117,733,658.61/13,148,390.36 - Step 6: Final answer
x = 10,138,968.66
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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.