Finding the Fourth Proportional to 13,070,987.49, 18,037,861.07 and 7,190,494.41
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Solution
The fourth proportional to 13,070,987.49, 18,037,861.07 and 7,190,494.41 is: 9,922,826.36
Step by Step Solution
- Step 1: Write the proportion equation
13,070,987.49 : 18,037,861.07 = 7,190,494.41 : x - Step 2: Convert to fraction form
13,070,987.49/18,037,861.07 = 7,190,494.41/x - Step 3: Cross multiply
13,070,987.49x = 18,037,861.07 × 7,190,494.41 - Step 4: Simplify right side
13,070,987.49x = 129,701,139,156,239.16 - Step 5: Solve for x
x = 129,701,139,156,239.16/13,070,987.49 - Step 6: Final answer
x = 9,922,826.36
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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.