Finding the Fourth Proportional to 13,070,987.99, 18,037,861.76 and 7,190,494.91
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Solution
The fourth proportional to 13,070,987.99, 18,037,861.76 and 7,190,494.91 is: 9,922,827.05
Step by Step Solution
- Step 1: Write the proportion equation
13,070,987.99 : 18,037,861.76 = 7,190,494.91 : x - Step 2: Convert to fraction form
13,070,987.99/18,037,861.76 = 7,190,494.91/x - Step 3: Cross multiply
13,070,987.99x = 18,037,861.76 × 7,190,494.91 - Step 4: Simplify right side
13,070,987.99x = 129,701,153,136,611.16 - Step 5: Solve for x
x = 129,701,153,136,611.16/13,070,987.99 - Step 6: Final answer
x = 9,922,827.05
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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.